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New Hampshire, Southern Coos

Local Storm Report



08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0730 PM

Bretton Woods, Coos County.

Flash flood, reported by public.


            Ammonoosuc river near Bretton Woods rapidly overflowed
            its banks... recreaction activities still suspended 8/4




08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0730 PM

Bretton Woods, Coos County.

Flash flood, reported by public.


            Ammonoosuc river near Bretton Woods rapidly overflowed
            its banks... recreaction activities still suspended 8/4




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0730 PM

Bretton Woods, Coos County.

Flash flood, reported by public.


            Ammonoosuc river near Bretton Woods rapidly overflowed
            its banks... recreaction activities still suspended 8/4




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0730 PM

Bretton Woods, Coos County.

Flash flood, reported by public.


            Ammonoosuc river near Bretton Woods rapidly overflowed
            its banks... recreaction activities still suspended 8/4




08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0730 PM

Bretton Woods, Coos County.

Flash flood, reported by public.


            Ammonoosuc river near Bretton Woods rapidly overflowed
            its banks... recreaction activities still suspended 8/4




08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/04/2015 0150 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Tree down on Route 135





08/04/2015 0150 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Tree down on Route 135





08/04/2015 0150 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Tree down on Route 135





08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0730 PM

Bretton Woods, Coos County.

Flash flood, reported by public.


            Ammonoosuc river near Bretton Woods rapidly overflowed
            its banks... recreaction activities still suspended 8/4




08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0730 PM

Bretton Woods, Coos County.

Flash flood, reported by public.


            Ammonoosuc river near Bretton Woods rapidly overflowed
            its banks... recreaction activities still suspended 8/4




08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal *** reports of 2 deaths and many injuries
            due to tent collapse at the Lancaster Fairgrounds





08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.





08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal *** reports of 2 deaths and many injuries
            due to tent collapse at the Lancaster Fairgrounds





08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal, 15 inj *** reports of 2 deaths and many
            injuries due to tent collapse at the Lancaster
            Fairgrounds. Up to 250 people trapped.





08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal *** reports of 2 deaths and many injuries
            due to tent collapse at the Lancaster Fairgrounds





08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by broadcast media.


            *** 2 fatal *** reports of 2 deaths and many injuries
            due to tent collapse at the Lancaster Fairgrounds





08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town





08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0635 PM

2 miles NW of Dixville notcne, Coos County.

Hail m1.00 inch, reported by law enforcement.






08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds




08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds





08/03/2015 0540 PM

1 miles N of Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Circus tent blown over at Lancaster Fairgrounds





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town





08/03/2015 0540 PM

Lancaster, Coos County.

Thunderstorm wind damage, reported by law enforcement.


            Trees down all over town



Public Information Statement

Statement as of 4:09 PM EDT on August 04, 2015


... Microburst /straight line wind damage/ confirmed near
Lancaster in Coos County New Hampshire...

Location... Lancaster in Coos County New Hampshire
date... August 3rd 2015
estimated time... 543 PM EDT
estimated maximum wind speed... 55-60 mph with gusts to 75 mph
maximum path width... 100 yards
path length... 1.5 miles
beginning lat/Lon... 44.496 / 71.594
ending lat/Lon... 44.512 / 71.569
* fatalities... 2
* injuries... 15-20

* the information in this statement is preliminary and subject to
change pending final review of the event(s) and publication in
NWS storm data.

... Summary...
the National Weather Service in Gray ME has confirmed a
microburst /straight line wind damage/ near Lancaster in Coos
County New Hampshire on 08 03 2015.

The National Weather Service conducted a storm survey to
determine the cause of winds that resulted in two fatalities,
numerous injuries, and damage in the vicinity of the Lancaster New
Hampshire Fairgrounds at approximately 543 PM EDT on the evening
of August 3rd. Areal and ground surveys confirmed damage
consistent with a microburst. Numerous softwood trees were both
blown over and snapped while no structural damage occurred to
buildings. This type of damage is consistent with winds speeds of
55-60 mph with localized gusts approaching 75 mph. Most of the
tree damage occurred along and adjacent to the Connecticut River.

The National Weather Service would like to thank the New Hampshire
department of Homeland security and emergency management, New
Hampshire State Police, and Lancaster emergency management for
assisting in this survey.

This information can also be found on our website at
weather.Gov/gyx.

For reference...
a microburst is a convective downdraft with an affected outflow
area of less than 2 1/2 miles wide and peak winds lasting less
than 5 minutes. Microbursts may induce dangerous
horizontal/vertical wind shears... which can adversely affect
aircraft performance and cause property damage. Straight-line
winds are generally any wind that is not associated with
rotation... used mainly to differentiate them from tornadic winds.


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