Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 15, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Apr 29, 2003, 5:18 PM CDT for Hemphill County, Texas. It was in force for 42 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
- Apr 29, 2003, 5:18 PM CDT (22:18 UTC)
- Expired
- Apr 29, 2003, 6:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Amarillo, TX
- Area
- Counties, with a storm outline in the text
County Hemphill County, TX
The radar
The Amarillo radar (KAMA), 145 km from the middle of the area, began a volume at 22:19 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 |
|---|---|---|---|
| Apr 29, 2:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 10.3 hours before the alert went out and 145 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
- 32 J/kg
- Mixed-layer CIN
- -470 J/kg
- Mixed-layer LCL
- 2022 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 128 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
786 WUUS54 KAMA 292218 SVRAMA TXC211-292300- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 517 PM CDT TUE APR 29 2003 THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HEMPHILL COUNTY IN THE PANHANDLE OF TEXAS * UNTIL 600 PM CDT * AT 517 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES SOUTHWEST OF LAKE MARVIN...OR ABOUT 11 MILES SOUTHEAST OF CANADIAN...MOVING NORTHEAST AT 25 MPH. * SOME LOCATIONS AFFECTED BY THE STORM INCLUDE... LAKE MARVIN LARGE HAIL...DAMAGING WINDS...AND TORRENTIAL RAINS ARE EXPECTED WITH THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER. LAT...LON 3578 10047 3565 10032 3589 9998 3605 10017 $$
What 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 Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 29, 3:18 PM CDT, 2 hours earlier.
Area forecast discussion, Apr 29, 3:18 PM CDT, 2 hours before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 315 PM CDT TUE 29 APR 2003 PROG SOUNDINGS INDICATE WHAT LITTLE CAP WAS OVER THE PANHANDLES HAS PRETTY MUCH ERODED AWAY THIS AFTERNOON. PLENTY OF LOW LEVEL MOISTURE OFF THE CAPROCK HAS CAUSED THE DRYLINE TO TIGHTEN THIS AFT AND WILL BE THE FOCUS OF CONVECTION INTO THIS EVE. WBZ NEAR 10K AND CAPES GT 2000 J/KG WILL MEAN HAIL WILL BE THE MAIN THREAT. TOMORROW WILL HAVE TO BE MONITORED FOR FIRE WEATHER CONCERNS...ESP SINCE THE WESTERN COUNTIES TODAY ARE JUST ABOUT MEETING CRITERIA. A WEAK COLD FRONT WILL MOVE THROUGH THE PANHANDLES EARLY THU FOLLOWED BY A WEAK REINFORCING SHOT ON FRI. THE FRONT WILL NOT REMAIN TO OUR SOUTH LONG BEFORE DISTURBANCES IN SWLY UPPER FLOW PULL THE FRONT NORTH ACROSS THE CWA LATER FRI. THIS FRONT COULD BE THE FOCUS FOR TSTMS ON SAT. BY SUN MOST OF THE DYNAMICS SHOULD BE OVER OK AS ANOTHER COLD FRONT MOVES INTO THE REGION. FCSTID = 10 AMARILLO 53 85 46 74 / 10 00 00 00 BEAVER 56 85 47 73 / 30 00 00 00 BOISE CITY 47 81 41 71 / 00 00 00 00 BORGER 54 85 46 73 / 30 00 00 00 BOYS RANCH 51 85 44 73 / 10 00 00 00 CANYON 54 85 46 76 / 10 00 00 00 CLARENDON 57 87 50 77 / 40 00 00 00 DALHART 49 83 42 73 / 00 00 00 00 GUYMON 52 84 44 72 / 20 00 00 00 HEREFORD 52 85 45 78 / 10 00 00 00 LIPSCOMB 57 87 49 74 / 40 00 00 00 PAMPA 55 86 48 73 / 30 00 00 00 SHAMROCK 58 89 51 76 / 50 00 00 00 WELLINGTON 58 89 53 77 / 40 00 00 00 .AMA... TX...NONE. OK...NONE. HENNIG
Hazardous weather outlook, Apr 29, 1:00 PM CDT, 4 hours 18 minutes before
OKZ001>003-TXZ001>020-301100- TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AMARILLO TX 100 PM CDT TUE APR 29 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA PANHANDLES. .DAY ONE... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND TONIGHT ACROSS THE EASTERN ONE-THIRD OF THE TEXAS AND OKLAHOMA PANHANDLES. LARGE HAIL AND DAMAGING DOWNBURST WINDS WILL BE THE MAIN SEVERE WEATHER THREATS. ISOLATED TORNADOES MAY ALSO OCCUR. .DAYS TWO THROUGH SEVEN... BREEZY WINDS AND DRY CONDITIONS WILL INCREASE THE FIRE DANGER ON WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND THIS EVENING ACROSS THE EASTERN TEXAS AND OKLAHOMA PANHANDLES. COCKRELL
In the hours before
Special weather statement, Apr 29, 5:00 PM CDT, 18 minutes before
TXZ013-TXZ018-TXZ004-TXZ005-TXZ009-TXZ010-TXZ014-TXZ015-TXZ019- TXZ020-300100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AMARILLO TX 500 PM CDT TUE APR 29 2003 TXZ013-018-300100- THE NATIONAL WEATHER SERVICE IN AMARILLO HAS CLEARED A PORTION OF SEVERE THUNDERSTORM WATCH 180. COUNTIES CLEARED INCLUDE: IN THE TEXAS PANHANDLE: CARSON...ARMSTRONG... THIS INCLUDES THE CITIES OF...CLAUDE...PANHANDLE... TXZ004-005-009-010-014-015-019-020-300100- SEVERE THUNDERSTORM WATCH 180 REMAINS VALID UNTIL 800 PM CDT TUESDAY FOR THE FOLLOWING COUNTIES: IN THE TEXAS PANHANDLE: OCHILTREE...LIPSCOMB...ROBERTS...HEMPHILL...GRAY...WHEELER... DONLEY...COLLINGSWORTH... THIS INCLUDES THE CITIES OF...BOOKER...CANADIAN...CLARENDON... MIAMI...PAMPA...PERRYTON...SHAMROCK...WELLINGTON...
The office that day
Everything else NWS Amarillo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 7:16 PM CDT | Severe Thunderstorm Warning | AMA | Potter | 44 min |
| Apr 28, 7:20 PM CDT | Severe Thunderstorm Warning | AMA | Carson, Potter | 40 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2003Every severe thunderstorm warning in 2003
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.