Alert archive / Texas / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 429, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Aug 27, 2002, 4:42 AM CDT for Archer County, Texas. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 27, 2002, 4:42 AM CDT (09:42 UTC)
- Expired
- Aug 27, 2002, 5:30 AM CDT
- In force
- 48 min
- Issued by
- NWS Norman, OK
- Area
- Counties, with a storm outline in the text
County Archer County, TX
The radar
The Altus AFB radar (KFDR), 87 km from the middle of the area, began a volume at 09:44 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 27, 3:40 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 9.7 hours before the alert went out and 154 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2219 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 2011 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.8
The text
As transmitted, in the capitals the NWS used until 2016.
957
WUUS54 KOUN 270942
SVROKC
TXC009-271030-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
441 AM CDT TUE AUG 27 2002
THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
ARCHER COUNTY IN NORTHERN TEXAS
* UNTIL 530 AM CDT
* AT 441 AM CDT...DOPPLER RADAR DETECTED A LINE OF SEVERE
THUNDERSTORMS FROM 15 MILES NORTH OF SCOTLAND TO DUNDEE...MOVING
SOUTH AT 40 MPH.
* LOCATIONS IN THE WARNING INCLUDE ARCHER CITY...DUNDEE...HOLLIDAY...
LAKE DIVERSION...LAKE KICKAPOO...MANKINS...MEGARGEL...SCOTLAND AND
WINDTHORST
THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING WIND GUSTS OF 60 TO 70
MPH. MOBILE HOMES AND HIGH PROFILE VEHICLES ARE ESPECIALLY
SUSCEPTIBLE TO HIGH WINDS AND MAY BE OVERTURNED. MOVE TO A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.
LAT...LON 3386 9843 3381 9896 3339 9894 3341 9868
3344 9843
11What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 27, 3:35 AM CDT, 1 hour 7 minutes earlier.
Area forecast discussion, Aug 27, 3:35 AM CDT, 1 hour 7 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 335 AM CDT TUE AUG 27 2002 AN INTENSE MCS HAS PASSED ACROSS ABOUT 2/3 OF OUR FORECAST AREA AS OF 330 AM. BY THE TIME THE ZONE FORECAST TAKES EFFECT AT 7 AM... THE LEADING EDGE OF THE MCS SHOULD BE NEAR THE RED RIVER. THE FORECAST WILL BEGIN WITH STORMS IN OUR SOUTH AND CENTRAL COUNTIES... WITH THE RAIN SLOWLY DECREASING THIS MORNING. ADDITIONAL STORM DEVELOPMENT IS POSSIBLE THIS AFTERNOON AS VERTICAL MOTION IS FORECAST TO PERSIST ACROSS THE REGION... AND THERE WILL BE SURFACE BOUNDARIES LEFT OVER FROM THE MORNING CONVECTION. THE GREATER CHANCE FOR STORMS WILL COME AGAIN TONIGHT AS ANOTHER MCS IS LIKELY TO DEVELOP... MUCH THE SAME AS THE CURRENT ONE... ALTHOUGH PERHAPS A BIT FARTHER WEST... AND HOPEFULLY NOT AS INTENSE. HAVE EDGED POPS UP SOME FOR TONIGHT IN ALL LOCATIONS. THE NIGHTLY MCS SCENARIO DOES NOT END UNTIL THURSDAY... IF THE MODELS ARE TO BE BELIEVED. SO... HAVE KEPT MODEST POPS INTO WEDNESDAY NIGHT... AND HAVE LEFT THE FORECAST DRY FOR THE REST OF THE FORECAST PERIOD. OTHER THAN CHANGES TO CLOUD COVER AND MINOR TEMPERATURE ADJUSTMENTS... DID NOT MAKE MUCH IN THE WAY OF CHANGES TO THE REMAINDER OF THE FORECAST. FCSTID = 23 = CMS OKC 88 69 88 68 / 90 50 20 30 HBR 88 68 88 68 / 60 60 30 40 SPS 88 71 94 72 / 100 60 30 40 GAG 86 65 87 65 / 40 60 30 40 PNC 88 69 88 68 / 50 40 20 30 DUA 90 70 92 71 / 100 40 20 30 .OUN... OK...NONE. TX...NONE.
In the hours before
Local storm report, Aug 27, 12:13 AM CDT, 4 hours 29 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1213 AM CDT TUE AUG 27 2002
TIME (CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1145 PM 1 SW BUFFALO OK 68 MPH WIND GUST
08/26/02 HARPER OKLAHOMA MESONET REPORT.
WIND 35048G59KT.
...SPEG.Local storm report, Aug 27, 12:55 AM CDT, 3 hours 47 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1255 AM CDT TUE AUG 27 2002
TIME (CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1150 PM 1 SW BUFFALO OK 64 MPH WIND GUST
08/26/02 HARPER MEASURED BY OKLAHOMA
MESONET. WIND 36044G55KT.
1207 AM 2 SW GAGE OK 72 MPH WIND GUST
08/27/02 ELLIS MEASURED AT GAGE AIRPORT
ASOS. PK WND 34063/0507.
1210 AM FORT SUPPLY OK 60 MPH WIND GUST
08/27/02 WOODWARD SPOTTER ESTIMATE OF 60 TO
65 MPH WINDS. TWO PICKUP
TRUCK TOPPERS BLOWN OFF.
1215 AM FORT SUPPLY OK WIND DAMAGE
08/27/02 WOODWARD ESTIMATED 60 TO 70 MPH
WINDS REPORTED BY COOP
OBSERVER. TWO LARGE TREE
LIMBS /6 TO 8 INCH/ DOWNED.
1220 AM WOODWARD OK WIND DAMAGE
08/27/02 WOODWARD SPOTTER RELAYED REPORT OF
TWO TREES BLOWN OVER INTO A
HOUSE.
1225 AM 2 WSW WOODWARD OK 68 MPH WIND GUST
08/27/02 WOODWARD MEASURED BY OKLAHOMA
MESONET. WIND 33038G59KT.
1229 AM 8 W WOODWARD OK 68 MPH WIND GUST
08/27/02 WOODWARD AWOS MEASURED WIND AT WEST
WOODWARD AIRPORT /KWWR/.
WIND 34036G59KT.
...SPEG.Local storm report, Aug 27, 2:00 AM CDT, 2 hours 42 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
200 AM CDT TUE AUG 27 2002
TIME (CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1210 AM FARGO OK WIND DAMAGE
08/27/02 ELLIS TIME ESTIMATED. REPORTS OF
TREE DOWNED AND RAILROAD
CROSSARMS DAMAGED AT FARGO
AND GAGE. REPORTED BY ELLIS
COUNTY SHERIFFS OFFICE.
1215 AM FORT SUPPLY OK .75 INCH HAIL
08/27/02 WOODWARD REPORTED BY COOP OBSERVER
1245 AM WOODWARD OK WIND DAMAGE
08/27/02 WOODWARD REPORT OF TWO BUILDINGS
WITH SIGNIFICANT ROOF
DAMAGE. REPORTED BY
SPOTTERS.
1252 AM VICI OK 70 MPH WIND GUST
08/27/02 DEWEY ESTIMATED 70 TO 80 MPH WIND
REPORTED BY LAW ENFORCEMENT
AND AMBULANCE SERVICE AND
RELAYED BY DEWEY COUNTY
SHERIFFS OFFICE.
0100 AM 4 WNW CAMARGO OK 66 MPH WIND GUST
08/27/02 DEWEY MEASURED BY OKLAHOMA
MESONET.
0100 AM 6 SE MUTUAL OK 70 MPH WIND GUST
08/27/02 WOODWARD MEASURED BY OKLAHOMA
MESONET. ALSO GUSTS TO
61 MPH AT 0055 AM...
58 MPH AT 0105 AM AND
64 MPH AT 0110 AM.
0120 AM 3 E MENO OK 60 MPH WIND GUST
08/27/02 MAJOR MEASURED BY OKLAHOMA
MESONET. WIND 34030G52KT.
0125 AM 3 N PUTNAM OK 60 MPH WIND GUST
08/27/02 DEWEY MEASURED BY OKLAHOMA
MESONET. WIND 33040G52KT.
...SPEG.Local storm report, Aug 27, 2:25 AM CDT, 2 hours 17 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
225 AM CDT TUE AUG 27 2002
TIME (CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0200 AM 7 W WATONGA OK 61 MPH WIND GUST
08/27/02 BLAINE MEASURED BY OKLAHOMA
MESONET. WIND 33028G53KT.
ALSO GUST TO 58 MPH AT
0155 AM.
...SPEG.Local storm report, Aug 27, 2:57 AM CDT, 1 hour 45 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
257 AM CDT TUE AUG 27 2002
TIME (CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0205 AM 4 WSW WEATHERFORD OK 80 MPH WIND GUST
08/27/02 CUSTER MEASURED BY OKLAHOMA
MESONET. WIND 35047G70KT.
ALSO 69 MPH GUST AT 0210 AM
AND 60 MPH GUST AT 0215 AM.
0210 AM 4 WNW BESSIE OK 60 MPH WIND GUST
08/27/02 WASHITA MEASURED BY OKLAHOMA
MESONET. WIND 36041G52KT.
...SPEG.The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 4:12 AM CDT | Severe Thunderstorm Warning | OUN | Wichita, Wilbarger | 63 min |
| Aug 27, 4:33 AM CDT | Severe Thunderstorm Warning | OUN | Clay | 57 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm warning in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.