Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 172, NWS Amarillo, TX
NWS Amarillo, TX issued this severe thunderstorm warning at Sep 2, 2001, 6:31 PM CDT for Carson County, Potter County, Texas. It was in force for 44 min. 2 reports came from 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, with what was reported inside it.
The facts
- Issued
- Sep 2, 2001, 6:31 PM CDT (23:31 UTC)
- Expired
- Sep 2, 2001, 7:15 PM CDT
- In force
- 44 min
- Issued by
- NWS Amarillo, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Carson County, TX, Potter County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 2, 7:00 PM CDT | Hail 1.75 | Panhandle, TX | |
| Sep 2, 7:01 PM CDT | Hail 1.75 | Pantex, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 11.5 hours before the alert went out and 16 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
- 215 J/kg
- Mixed-layer CIN
- -184 J/kg
- Mixed-layer LCL
- 1568 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
803 WUUS54 KAMA 022332 SVRAMA TXC065-375-030015- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE AMARILLO TX 631 PM CDT SUN SEP 2 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN POTTER COUNTY IN TEXAS WESTERN CARSON COUNTY IN TEXAS * UNTIL 715 PM CDT * AT 631 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ABOUT 10 MILES NORTH OF AMARILLO...MOVING EAST AT 10 MPH. THIS STORM IS CAPABLE OF PRODUCING HAIL GREATER THAN QUARTER SIZE. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS. LAT...LON 3520 10196 3522 10143 3562 10144 3561 10191
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 Sep 2, 2:41 PM CDT, 3 hours 50 minutes earlier.
Area forecast discussion, Sep 2, 2:41 PM CDT, 3 hours 50 minutes before
TEXAS/OKLAHOMA PANHANDLES FORECAST DISCUSSION NATIONAL WEATHER SERVICE AMARILLO TX 241 PM CDT SUN SEP 2 2001 A RATHER FAST BAND OF WESTERLIES CONTINUES ACROSS THE U.S./CANADIAN BORDER WHILE THE REMAINDER OF THE COUNTRY REMAINS IN A WEAK WESTERLY FLOW. THE EXCEPTION BEING ACROSS THE DESERT SOUTHWEST AND INTO THE PANHANDLES WHERE 12Z RAOBS SHOWING WESTERLY 50KT WINDS AT 250MB. LATEST SURFACE ANALYSIS SHOWS A TROUGH ALONG THE CO/KS STATE LINE STRETCHING SOUTHWEST INTO THE EASTERN NM PLAINS. DRIER AIR WAS FILTERING INTO THE FAR NORTHWEST CWA WITH OK MESONET SHOWING 19Z DEW POINTS OF 41F AT BOISE CITY AND KENTON. WE WILL HAVE TO KEEP AN EYE ON ANY STORMS THAT DEVELOP IN THE NORTHWEST WITH LARGE SURFACE DEW POINT DEPRESSIONS. MODEL INITIALIZATIONS DID A REASONABLE JOB WITH A COUPLE OF EXCEPTIONS. 500MB TEMPS LOOK A LITTLE WARM ON ALL MODELS AND THE AVN WAS TOO AGGRESSIVE WITH THE BOUNDARY LAYER MOISTURE ACROSS THE CWA. COLD AIR ADVECTION AT 500MB ALONG WITH LOW-LEVEL HEATING WILL INCREASE LAPSE RATES ACROSS THE CWA TODAY. WE EXPECT ISOLATED TO SCATTERED SHOWER AND THUNDERSTORM ACTIVITY ACROSS THE AREA TONIGHT. CURRENT FORECAST HAS A GOOD HANDLE ON THE SITUATION AND ONLY ADJUSTMENTS TO FIRST PERIOD WILL BE BASED ON RADAR TRENDS. UPPER FLOW VEERS FROM NW TO N ON MONDAY WHILE LOW LEVEL FLOW BACKS TO A MORE SELY DIRECTION. EXCEPTION BEING THE WESTERN CWA WHERE MODELS SHOWING SOME DRIER AIR IN PLACE. MAY HAVE TO TRIM THE ALREADY SLIM POPS THERE. DO NOT SEE ANY SURFACE BOUNDARIES TO SERVE AS A FOCUSING MECHANISM FOR MONDAY NIGHT AND WITH 500MB TEMPS WARMING PRECIP CHANCES WILL BE ON THE DECLINE. GUT FEELING IS TO PULL POPS FOR TUESDAY AS HIGHER THETA-E AIR SHIFTS WEST...BUT WITH BOUNDARY LAYER MOISTURE AND DAYTIME HEATING...CAN/T COMPLETELY RULE OUT PRECIPITATION. IN THE EXTENDED (WED-SUN)...MODELS CONTINUE TO OFFER DIFFERENT SOLUTIONS ON HANDLING THE WEST COAST SYSTEM. NEEDLESS TO SAY CONFIDENCE IS LOW IN THE EXTENDED PERIOD. WE WILL PULL POPS ON WEDNESDAY AS MODELS INDICATING DRY NORTHERLY FLOW AND WARMING TEMPS AT THE MID-LEVELS. RIDGE THEN BUILDS OVER AZ FOR SOME WEAK NW FLOW ALOFT. PREVIOUS MRF BROUGHT A COLD FRONT INTO THE CWA EARLY FRIDAY. LATEST RUN ALONG WITH THE AVNX HAS SLOWED THE PROGRESS OF THIS FRONT. CONFIDENCE NOT HIGH EITHER WAY...BUT WITH THE NOGAPS AND CANADIAN TRENDING THIS WAY WILL ADJUST FORECAST FOR A SLOWER FRONTAL PASSAGE. PRELIM CCF... AMA 62/88 62/85 61 323 DHT 57/86 59/84 58 313 .AMA... TX...NONE. OK...NONE. PLATT
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.