Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 49, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at Apr 16, 2001, 4:49 PM CDT for Irion County, Texas. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Apr 16, 2001, 4:49 PM CDT (21:49 UTC)
- Expired
- Apr 16, 2001, 5:45 PM CDT
- In force
- 56 min
- Issued by
- NWS San Angelo, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Irion County, TX
The radar
The San Angelo radar (KSJT), 65 km from the middle of the area, began a volume at 21:52 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.
The nearest sounding before it
Midland Regional, TX (KMAF), launched 12:00Z, 9.8 hours before the alert went out and 114 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
- 65 J/kg
- Mixed-layer CIN
- -286 J/kg
- Mixed-layer LCL
- 1108 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 254 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KSJT 162150 SVRSJT TXC235-162245- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SAN ANGELO TX 449 PM CDT MON APR 16 2001 THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... IRION COUNTY IN WEST CENTRAL TEXAS * UNTIL 545 PM CDT * AT 446 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER NORTHWESTERN IRION COUNTY...OR ABOUT 22 MILES NORTHEAST OF BIG LAKE...MOVING SOUTHEAST AT 5 MPH. * THIS STORM WILL REMAIN OVER RURAL AREAS OF IRION COUNTY. HAILSTONES AS LARGE AS QUARTERS ARE LIKELY WITH THIS STORM. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING AND STAY AWAY FROM WINDOWS. LAT...LON 3152 10125 3136 10127 3125 10111 3145 10098
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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 16, 2:25 PM CDT, 2 hours 24 minutes earlier.
Area forecast discussion, Apr 16, 2:25 PM CDT, 2 hours 24 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 225 PM CDT MON APR 16 2001 STRONG ARCTIC FRONT TO BLAST SWRD THRU WEST CNTRL TX TONIGHT... PRODUCING WIDESPREAD SHOWERS/TSTMS MAINLY SOUTH OF THE BIG COUNTRY. EARLY AFTERNOON TEMPERATURES ONLY IN THE UPPER 30S/40S ACROSS NE/KS SO THIS FRONT MEANS BUSINESS. DEWPOINTS AT ABI/SJT/JCT NOW IN THE UPPER 50S-MID 60S AS LOW LEVEL FLOW HAS BACKED TO SELY. LOW LEVEL MOISTURE ADVECTING NWRD WILL BE PLENTIFUL LOOKING AT SFC OBS TO OUR SOUTH AND 12Z KDRT SOUNDING. EXPECT THE COLD FRONT NOW OVER SRN OK TO MOVE INTO THE BIG COUNTRY LATE AFTERNOON/EARLY EVENING...THEN SURGING SWRD INTO THE NRN EDWARDS PLATEAU/NW HILL COUNTRY AROUND MIDNIGHT. THE CNTRL/SRN ZONES STILL LOOK TO GET THE BULK OF THE SHOWERS/TSTMS WHERE GREATEST LOW LEVEL MOISTURE CONVERGENCE AND INSTABILITY WILL COINCIDE AND WHERE OVERRUNNING OVER THE FRONTAL BOUNDARY WILL BE GREATEST...SO WILL CONTINUE WITH CATEGORICAL POPS (80-100 PERCENT) THERE. THE ETA CONTINUES TO PAINT THE GREATEST QPF IN CNTRL/SRN ZONES AS IT HAS DONE FOR THE PAST SEVERAL RUNS AND WITH THE PRECIPITABLE WATER FORECAST TO INCREASE TO 1.5 INCHES AND FAIRLY WEAK STEERING WINDS ALOFT...WILL ADD MENTION OF LOCALLY HEAVY RAINFALL SOUTH OF THE BIG COUNTRY. OVERRUNNING OVER THE COLD FRONT OCCURS MAINLY TUE MORNING BEFORE DECREASING...SO WILL CONFINE RAIN CHANCES TO THAT PERIOD. BRISK NELY WINDS AND CLOUD COVER ALONG WITH STRONG 1032 MB HIGH WILL KEEP HIGH TEMPERATURES SOME 20-30 DEGREES BLO NORMAL ON TUE. MAY SEE SOME CLEARING ACROSS THE BIG COUNTRY TUE AFTERNOON AS LOW LEVELS DRY. ON WED...SFC LEE TROFFING DEVELOPS AGAIN AS AN UPPER RIDGE AXIS MOVES OVER THE ROCKIES. THE EROSION OF THE SHALLOW COLD AIR AND PROXIMITY OF UPPER RIDGE SHOULD PRODUCE PARTLY CLOUDY SKIES AND WARMER TEMPERATURES...BUT STILL BLO NORMALS. DRY/WARMER FOR THU AS THE UPPER RIDGE AXIS MOVES ACROSS TX AND 1000-500 MB THICKNESSES RISE INTO THE 5730-5760 METER RANGE. FRI-SUN LOOK DRY WITH ABOVE NORMAL TEMPERATURES AS SWLY FLOW ALOFT AND RELATIVELY HIGH UPPER HEIGHTS PREVAIL. THE MRF IS FORECASTING A PACIFIC ORIGIN COLD FRONTAL PASSAGE ACROSS WEST CNTRL TX NEXT MONDAY. HOWEVER...500 MB COMPARISON WITH THE PREVIOUS MRF RUN USING THE AWIPS DPROG/DT SHOWS A LARGE VARIATION IN UPPER TROF/SFC FEATURE POSITIONING...SO WILL NOT ADD RAIN CHANCES OR COOLER TEMPERATURES FOR MONDAY SINCE CONFIDENCE IS LOW IN THE CURRENT MODEL SOLUTION FOR DAY 7. ABI 045/053/040/069 6200 SJT 051/053/041/070 8600 JCT 055/058/043/069 9600 .SJT...NONE. RUBIN
In the hours before
Special weather statement, Apr 16, 2:38 PM CDT, 2 hours 11 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-162300- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 238 PM CDT MON APR 16 2001 ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT ACROSS PARTS OF WEST CENTRAL TEXAS... A STRONG COLD FRONT WILL MOVE INTO THE BIG COUNTRY EARLY THIS EVENING...THEN PUSH SOUTHWARD THROUGH THE REMAINDER OF WEST CENTRAL TEXAS BY MIDNIGHT. MEANWHILE...MOISTURE WILL SURGE BACK NORTHWARD INTO WEST CENTRAL TEXAS THIS AFTERNOON. A FEW THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON...AS DAYTIME HEATING COMBINES WITH ATMOSPHERIC MOISTURE. THE BEST CHANCE OF STORMS HOWEVER WILL BE AFTER 9 PM...AS THE COLD FRONT MOVES IN. ENOUGH INSTABILITY AND MOISTURE WILL EXIST OVER THE SOUTHERN HALF OF WEST CENTRAL TEXAS TO PRODUCE A SLIGHT CHANCE OF SEVERE THUNDERSTORMS. THIS AREA IS ALONG AND SOUTH OF A STERLING CITY...WINTERS...SAN SABA LINE. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY THREATS. SPOTTER ACTIVATION MAY BE REQUIRED.. FOR THE SOUTHWEST TEXAS AND SOUTHEAST NEW MEXICO OUTLOOK SEE PRODUCT LBBSPSMAF. FOR THE SOUTH PLAINS OUTLOOK SEE PRODUCT LBBSPSLBB. FOR THE CENTRAL OKLAHOMA OUTLOOK SEE PRODUCT OKCSPSOKC. FOR THE NORTH TEXAS OUTLOOK SEE PRODUCT FTWSPSFTW. FOR THE SOUTH CENTRAL TEXAS OUTLOOK SEE PRODUCT SATSPSSAT. 04
Special weather statement, Apr 16, 2:41 PM CDT, 2 hours 8 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-162300- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 241 PM CDT MON APR 16 2001 ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TONIGHT ACROSS PARTS OF WEST CENTRAL TEXAS... A STRONG COLD FRONT WILL MOVE INTO THE BIG COUNTRY EARLY THIS EVENING...THEN PUSH SOUTHWARD THROUGH THE REMAINDER OF WEST CENTRAL TEXAS BY MIDNIGHT. MEANWHILE...MOISTURE WILL SURGE BACK NORTHWARD INTO WEST CENTRAL TEXAS THIS AFTERNOON. A FEW THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON...AS DAYTIME HEATING COMBINES WITH ATMOSPHERIC MOISTURE. THE BEST CHANCE OF STORMS HOWEVER WILL BE AFTER 9 PM...AS THE COLD FRONT MOVES IN. ENOUGH INSTABILITY AND MOISTURE WILL EXIST OVER THE SOUTHERN HALF OF WEST CENTRAL TEXAS TO PRODUCE A SLIGHT CHANCE OF SEVERE THUNDERSTORMS. THIS AREA IS ALONG AND SOUTH OF A STERLING CITY...WINTERS...SAN SABA LINE. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY THREATS. SPOTTER ACTIVATION MAY BE REQUIRED.. FOR THE SOUTHWEST TEXAS AND SOUTHEAST NEW MEXICO OUTLOOK SEE PRODUCT LBBSPSMAF. FOR THE SOUTH PLAINS OUTLOOK SEE PRODUCT LBBSPSLBB. FOR THE CENTRAL OKLAHOMA OUTLOOK SEE PRODUCT OKCSPSOKC. FOR THE NORTH TEXAS OUTLOOK SEE PRODUCT FTWSPSFTW. FOR THE SOUTH CENTRAL TEXAS OUTLOOK SEE PRODUCT SATSPSSAT. 04
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 16, 4:50 PM CDT | Severe Thunderstorm Warning | SJT | Tom Green | 55 min |
| Apr 16, 5:45 PM CDT | Severe Thunderstorm Warning | SJT | Irion | 60 min |
| Apr 16, 6:35 PM CDT | Severe Thunderstorm Warning | SJT | Crockett | 55 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2001Every severe thunderstorm warning in 2001
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.