Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 76, NWS San Angelo, TX
NWS San Angelo, TX issued this severe thunderstorm warning at May 6, 2001, 4:50 PM CDT for Mason County, Texas. It was in force for 25 min. 1 report 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
- May 6, 2001, 4:50 PM CDT (21:50 UTC)
- Expired
- May 6, 2001, 5:15 PM CDT
- In force
- 25 min
- Issued by
- NWS San Angelo, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Mason County, TX
The radar
The San Angelo radar (KSJT), 141 km from the middle of the area, began a volume at 21:53 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 6, 5:15 PM CDT | Hail 1.75 | Pontotoc, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 6, 2:45 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 9.8 hours before the alert went out and 216 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
- 2568 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 564 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 5.8
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 May 6, 3:10 PM CDT, 1 hour 40 minutes earlier.
Area forecast discussion, May 6, 3:10 PM CDT, 1 hour 40 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN ANGELO TX 310 PM CDT SUN MAY 6 2001 SHORT TERM...LATEST SATELLITE IMAGERY INDICATES SOME CUMULUS DEVELOPMENT BEGINNING ACROSS THE CONCHO VALLEY AND HEARTLAND. SURFACE DRYLINE EXTENDS ALONG THE WESTERN EDGE OF OUR CWFA. ALTHOUGH LATEST WSR-88D WIND PROFILE DATA NOT REAL IMPRESSIVE...SOME DIRECTIONAL SHEAR EVIDENT. IN ADDITION...DEEPER MOISTURE AND INCREASED INSTABILITY EAST OF THE DRYLINE WILL ENHANCE SUPERCELL FORMATION. AFTER COORDINATION WITH SPC...A TORNADO WATCH APPEARS BEST FOR OUR SOUTHEASTERN CWFA. LATER TONIGHT...MODELS BRING WEAK FRONTAL BOUNDARY INTO THE BIG COUNTRY AND POSSIBLY THE NORTHERN CONCHO VALLEY BY SUNRISE. FRONT WILL BRING COOLER TEMPERATURES AND ADDITIONAL SURFACE FOCUS FOR AFTERNOON AND EARLY EVENING THUNDERSTORMS THROUGH TUESDAY. TEMPERATURES REFLECT A MIX OF PERSISTENCE AND GUIDANCE. EXTENDED...LATE NEXT WEEK...MRF INDICATES ANOTHER ROUND OF PRECIPITATION POSSIBLE FRIDAY AND SATURDAY...THEN DRY ON SUNDAY. ABI 060/075/060/078 3332 SJT 061/080/060/080 3332 JCT 065/080/065/080 3333 .SJT...NONE. HUBER
In the hours before
Special weather statement, May 6, 12:16 PM CDT, 4 hours 34 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-062115- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 1216 PM CDT SUN MAY 6 2001 ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ALONG AND EAST OF A BROWNWOOD TO JUNCTION LINE THROUGH EARLY EVENING... A DRYLINE ALONG A HASKELL TO SWEETWATER TO BIG LAKE LINE WILL ADVANCE EASTWARD TO ABILENE...SAN ANGELO AND SONORA AROUND MID AFTERNOON. MOIST AIR IS IN PLACE EAST OF THE DRYLINE. AS AN UPPER LEVEL DISTURBANCE MOVES OVER THE REGION THIS AFTERNOON...SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND EAST OF THE DRYLINE. ENOUGH INSTABILITY IS PRESENT FOR SOME OF THE STORMS TO BECOME SEVERE...MAINLY ALONG AND EAST OF A BROWNWOOD TO JUNCTION LINE THIS AFTERNOON AND EVENING...WHERE THE BEST MOISTURE EXISTS. THE MAIN THREAT IS LARGE HAIL AND DAMAGING WINDS. STORMS THAT DEVELOP ARE EXPECTED TO WEAKEN THIS EVENING WITH LOSS OF THE SUNS HEATING...AND PASSAGE OF THE UPPER DISTURBANCE. 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.
Special weather statement, May 6, 2:01 PM CDT, 2 hours 49 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140- 154-155-168>170-062300- WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN ANGELO TX 201 PM CDT SUN MAY 6 2001 ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ALONG AND EAST OF A BROWNWOOD TO JUNCTION LINE THROUGH EARLY EVENING... A DRYLINE JUST WEST OF AN THROCKMORTON....ABILENE...SAN ANGELO... SONORA LINE WILL MOVE EAST ALONG A COLEMAN TO BRADY TO JUNCTION LINE LATE THIS AFTERNOON. MOIST AIR IS IN PLACE EAST OF THE DRYLINE. AS AN UPPER LEVEL DISTURBANCE MOVES OVER THE REGION THIS AFTERNOON... SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND EAST OF THE DRYLINE. ENOUGH INSTABILITY IS PRESENT FOR SOME OF THE STORMS TO BECOME SEVERE...MAINLY ALONG AND EAST OF A BROWNWOOD TO JUNCTION LINE THIS AFTERNOON AND EVENING...WHERE THE BEST MOISTURE EXISTS. THE MAIN THREAT IS LARGE HAIL AND DAMAGING WINDS. STORMS THAT DEVELOP ARE EXPECTED TO WEAKEN THIS EVENING WITH LOSS OF THE SUNS HEATING...AND PASSAGE OF THE UPPER DISTURBANCE. 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.
Local storm report, May 6, 4:35 PM CDT, 15 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
435 PM CDT SUN MAY 6 2001
TIME(CDT) .....CITY LOCATION..... STATE...EVENT/REMARKS...
....COUNTY LOCATION....
0423 PM CHAPPEL TX 1.25 INCH HAIL
05/06/01 SAN SABA HALF DOLLAR SIZE HAILThe office that day
Everything else NWS San Angelo, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 3:20 PM CDT | Severe Thunderstorm Warning | SJT | Brown | 40 min |
| May 6, 4:13 PM CDT | Severe Thunderstorm Warning | SJT | San Saba | 62 min |
| May 6, 4:40 PM CDT | Severe Thunderstorm Warning | SJT | Brown | 65 min |
| May 6, 5:21 PM CDT | Severe Thunderstorm Warning | SJT | San Saba | 69 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; radar from the NEXRAD Level II archive.