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WeatherMatrix
© 2002 WeatherMatrix.Net - Redistribution
Prohibited. Usage logged.
From: Jesse Ferrell (WeatherMatrix) 2 (jesse{at}weathermatrix.net)
Date: Wed Apr 30 2003 - 08:06:11 EDT
The last two obs here show the burst:
http://www.wunderground.com/history/airport/KSPS/2003/4/27/DailyHistory.html
From the NWS...
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE WFO NORMAN OK
330 PM CDT MON APR 28 2003
...HEAT BURST CAUSES DAMAGE IN WICHITA AND ARCHER COUNTIES...
THE NATIONAL WEATHER SERVICE...ALONG WITH REPRESENTATIVES FROM
WICHITA FALLS EMERGENCY MANAGEMENT...SURVEYED DAMAGE CAUSED BY LAST
NIGHT'S HEAT BURST IN WICHITA FALLS.
THE HEAT BURST OCCURRED BETWEEN 1030 PM AND 1115 PM. A HEAT BURST IS
A PHENOMENON NOT UNCOMMON IN THE SOUTHERN PLAINS. IT USUALLY OCCURS
WHEN A THUNDERSTORM SOME DISTANCE AWAY COLLAPSES...AND RAIN FROM THE
UPPER PARTS OF THE STORM FALLS INTO DRIER AIR BELOW. AS THE RAIN
EVAPORATES INTO THE DRIER AIR...THE AIR COOLS AND STARTS TO SINK.
THE AIR WARMS AS IT SINKS...RESULTING IN NOT ONLY STRONG WINDS AT
THE SURFACE...BUT ALSO SOMETIMES DRAMATIC TEMPERATURE RISES.
AT THE OFFICIAL WEATHER OBSERVATION SITE IN WICHITA FALLS...THE
TEMPERATURE ROSE FROM 79 DEGREES TO 90 DEGREES IN A SHORT PERIOD OF
TIME.
THE MOST SIGNIFICANT DAMAGE APPEARED TO BE CONCENTRATED ALONG
SOUTHWEST PARKWAY BETWEEN FAIRWAY AND KEMP BLVD. IN THIS AREA
...THERE WERE NUMEROUS TREES AND POWER POLES SNAPPED OR BLOWN OVER
...POWER LINES DOWN...LIGHT POLES BLOWN OVER AND SOME STRUCTURAL
DAMAGE...INCLUDING A LARGE AWNING RIPPED OFF A RECREATIONAL FACILITY
ALONG SOUTHWEST PARKWAY.
OBSERVATIONS FROM THE AREA INDICATE THE MOST SIGNIFICANT DAMAGE WAS
CAUSED BY WIND GUSTS IN THE 80 TO 90 MPH RANGE. WIND GUSTS WERE
MEASURED AT 83 MPH... 85 MPH AND 87 MPH IN THREE DIFFERENT LOCATIONS
IN THIS GENERAL AREA.
OTHER DAMAGE WAS NOTED FURTHER NORTHEAST ALONG EASTSIDE DRIVE...
WHERE SEVERAL POWER POLES WERE SNAPPED.
THE HEAT BURST LIKELY BEGAN IN ARCHER COUNTY...WHERE TREES AND POWER
LINES WERE DAMAGED NEAR HOLLIDAY.
THIS EVENT IS SIMILAR TO A HEAT BURST THAT BROUGHT DAMAGING WINDS TO
PARTS OF CLAY AND ARCHER COUNTIES ON MAY 7...2002.
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