Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 164, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at Sep 20, 2001, 8:35 PM CDT for Taylor County, Texas. It was in force for 70 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 20, 2001, 8:35 PM CDT (01:35 UTC)
- Expired
- Sep 20, 2001, 9:45 PM CDT
- In force
- 70 min
- Issued by
- NWS San Angelo, TX
- Area
- Whole counties
County Taylor County, TX
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 20, 8:40 PM CDT | Thunderstorm Wind | Abilene, TX | High winds downed a large tree just southwest of Abilene. |
| Sep 20, 8:42 PM CDT | Thunderstorm Wind 64 M | Abilene, TX | A television station in Abilene measured winds at 73 mph during a severe thunderstorm. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 20, 6:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Midland Regional, TX (KMAF), launched 00:00Z, 1.6 hours before the alert went out and 221 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
- 1457 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 2502 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 165 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Sep 20, 2:17 PM CDT, 6 hours 18 minutes earlier.
Area forecast discussion, Sep 20, 2:17 PM CDT, 6 hours 18 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 217 PM CDT THU SEP 20 2001 MONITORING POSSIBILITY OF CONVECTIVE DEVELOPMENT FROM MERGER OF A COUPLE OF OUTFLOW BOUNDARIES THIS AFTERNOON. ONE BOUNDARY MOVING INTO BIG COUNTRY FROM THE WEST...WHILE THE OTHER APPROACHES FROM THE NORTHEAST. MERGER COULD OCCUR OVER BIG COUNTRY. GIVEN THE INSTABILITY...MOISTURE AVAILABILITY AND CONVERGENCE...SHOULD SEE SCATTERED THUNDERSTORM DEVELOPMENT WITH THE MERGER. ALTHOUGH VISIBLE IMAGERY HAD BEEN GARBLED...NOTICED A CURL IN THE CLOUD FEATURES DURING LATE MORNING OVER FAR NORTHEAST NM ASSOCIATED WITH WEAK EMBEDDED SHORTWAVE. EXPECT THUNDERSTORMS TO DEVELOP WITH THIS FEATURE AS IT MOVES INTO OK/TX PANHANDLES...WITH POSSIBLE MCS FORMATION. EXPECT THIS FEATURE TO MOVE SSE TONIGHT TO NEAR OUR FAR NORTHEAST CWFA BY FRI MORNING. WILL CARRY HIGH CHANCE TO LIKELY POP FOR BIG COUNTRY TONIGHT. WILL PROBABLY KEEP POPS OUT OF FORECAST TONIGHT FOR REST OF CWFA. TRACK OF MCS WILL PLAY AN IMPORTANT ROLE IN FRIDAY FORECAST ACROSS OUR CWFA. AT THIS TIME APPEARS THE FEATURE WILL TRACK SLOWLY SOUTHEAST FRIDAY. WILL CARRY A MORNING POP BIG COUNTRY AND INCLUDE A POP CENTRAL AND SOUTH. SHOWERS AND STORMS FROM DECAYING MCS COULD MOVE DOWN INTO CONCHO VALLEY/HEARTLAND...AND ASSOCIATED OUTFLOW BOUNDARY SHOULD PRESS SOUTH DURING THE DAY. WITH MORE CLOUDCOVER AND LOWER 850 MILLIBAR TEMPERATURES/THICKNESS EXPECT HIGHS TO BE SEVERAL DEGREES COOLER ON FRI. PLAN TO CONTINUE POP IN SOUTHEAST COUNTIES INTO FRI NIGHT. EXPECT LITTLE CHANGE IN MOISTURE AVAILABILITY INTO THE WEEKEND. WILL KEEP SATURDAY FORECAST DRY WITH LACK OF A DEFINITIVE SURFACE OR UPPER FEATURE. ON SUNDAY A STRONG SHORTWAVE IS PROGGED TO DIVE SSE INTO MIDWEST/GREAT LAKES IN AMPLIFYING UPPER FLOW. ASSOCIATED STRONG COLD FRONT TO MOVE QUICKLY SOUTH ACROSS OUR CWFA SUNDAY AFTERNOON. WILL CARRY POSSIBILITY FOR SHOWERS/THUNDERSTORMS WITH THIS FRONT. IN THE EXTENDED...UPPER RIDGE TO EXTEND NORTH INTO ROCKIES WITH NORTH FLOW ALOFT INTO TX. EXPECT NOTICABLY COOLER AND DRIER CONDITIONS FOR FIRST PART OF NEXT WEEK AS STRONG SURFACE HIGH PRESSURE RIDGE BUILDS SOUTH FROM SOUTHERN CANADA INTO TX. ABI 068/087/067/088 6400 SJT 071/087/067/088 1310 JCT 071/087/067/087 0320 .SJT...NONE. 19
The office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 20, 7:19 PM CDT | Severe Thunderstorm Warning | SJT | Haskell | 71 min |
| Sep 20, 7:34 PM CDT | Severe Thunderstorm Warning | SJT | Fisher | 56 min |
| Sep 20, 7:49 PM CDT | Severe Thunderstorm Warning | SJT | Throckmorton | 71 min |
| Sep 20, 7:52 PM CDT | Severe Thunderstorm Warning | SJT | Nolan | 68 min |
| Sep 20, 7:58 PM CDT | Severe Thunderstorm Warning | SJT | Jones | 77 min |
| Sep 20, 8:35 PM CDT | Severe Thunderstorm Warning | SJT | Shackelford | 70 min |
| Sep 20, 8:44 PM CDT | Severe Thunderstorm Warning | SJT | Callahan | 76 min |
| Sep 21, 1:42 AM CDT | Severe Thunderstorm Warning | SJT | Coke, Nolan, Runnels, Taylor | 48 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.