Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 29, NWS Corpus Christi, TX
NWS Corpus Christi, TX issued this severe thunderstorm warning at May 20, 2001, 7:11 PM CDT for Duval County, Webb County, Texas. It was in force for 64 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
- May 20, 2001, 7:11 PM CDT (00:11 UTC)
- Expired
- May 20, 2001, 8:15 PM CDT
- In force
- 64 min
- Issued by
- NWS Corpus Christi, TX
- Area
- Whole counties
Counties Duval County, TX, Webb County, TX
The radar
The Corpus Christi radar (KCRP), 139 km from the middle of the area, began a volume at 00:12 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 20, 7:30 PM CDT | Hail 2.75 | Realitos, TX | |
| May 20, 7:30 PM CDT | Hail 1 | Bruni, 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
Corpus Christi, TX (KCRP), launched 00:00Z, 0.2 hours before the alert went out and 156 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
- 1709 J/kg
- Mixed-layer CIN
- -209 J/kg
- Mixed-layer LCL
- 1168 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
442 WUUS54 KCRP 210013 SVRCRP TXC131-479-210115- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 711 PM CDT SUN MAY 20 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN DUVAL COUNTY IN TEXAS SOUTHEASTERN WEBB COUNTY IN TEXAS * UNTIL 815 PM CDT * AT 706 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 21 MILES SOUTHWEST OF MIRANDO CITY...MOVING NORTHEAST AT 20 MPH. THIS SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING... HAIL UP TO THE SIZE OF DIMES OR GREATER... WINDS UP TO 60 MILES AN HOUR... STAY AWAY FROM WINDOWS. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN CORPUS CHRISTI. $$ LAT...LON 2717 9921 2704 9906 2746 9823 2804 9878
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 Corpus Christi, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 20, 2:25 PM CDT, 4 hours 46 minutes earlier.
Area forecast discussion, May 20, 2:25 PM CDT, 4 hours 46 minutes before
COASTAL BEND FORECAST DISCUSSION NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 225 PM CDT SUN MAY 20 2001 SHORT TERM...MSAS REVEALS A COLD FRONT MOVG INTO THE NRN ROCKIES/NRN PLAINS THIS AFTN. THIS FRONT IS ASSOCIATED WITH AN UPPER TROUGH/LOW WHICH WL BE MOVG EWD ACRS THE PLAINS MONDAY. AS THIS UPPER DISTURBANCE MOVES EWD...THE SURFACE FRONT WL MOVE INTO THE CWA BY LATE MONDAY. AN UPPER JET WILL AFFECT THE REGION THROUGH TUESDAY. THUS...EXPECT SURFACE AND UPPER FORCING TO CONTRIBUTE TO CONVECTION MONDAY/MONDAY NIGHT. HWR...INSTABILITY WL LIKELY BE THE LIMITING FACTOR... NOTWITHSTANDING THE FACT THAT STG VERTICAL SHEAR...WHICH IS LIKELY MON IN ADVANCE OF THE FRONT...CAN OVERCOME BUOYANCY. IF THUNDERSTORMS FORM...THEY COULD BECOME STRONG...HWR LEAVE OUT TSTM SEVERITY FOR NOW OWING TO STATIC STABILITY CONCERNS. EXTENDED...AFTER FROPA LATE MONDAY/EARLY TUESDAY...SIGNIFICANT DRYING IS EXPECTED. THE MRF SOLN...ALTHOUGH ENSEMBLES DO NOT ADD TOO MUCH CREDENCE TO IT...PROGS THE FOREGOING UPPER LOW TO REMAIN QUASI-STATIONARY AND CONTRIBUTE TO A SECONDARY SURGE/FRONT FRIDAY. DO NOT EXPECT THIS FRONT TO TRIGGER PCPN AS MSTR WL PROBABLY BE INSUFFICIENT. MARINE...WINDS OVER THE BAYS WILL CONTINUE AROUND 20 KNOTS WITH HIGHER GUSTS INTO THE EVENING HOURS...THUS WILL MAINTAIN SCA OVER THE BAYS THROUGH THE EVENING. OFFSHORE BUOYS WERE REPORTING WINDS IN THE 15 TO 20 KNOT RANGE AND AM EXPECTING THE GRADIENT TO STRENGTHEN OVERNIGHT...THUS WILL GO SCA OFFSHORE AS WELL. GRADIENT RELAXES ON MON...MORE SO OVER THE BAYS...AS A CF APPROACHES CENT TX. THE CF...ALONG WITH SHRAS AND TSRAS...IS PROGD TO MOVE OFFSHORE OVERNIGHT MON NIGHT WITH A STRONG NORTH WIND DEVELOPING IN ITS WAKE. WILL GO WITH A MWS ON THE UPCOMING LATE SEASON CF. ONSHORE FLOW QUICKLY REDEVELOPS WED AND CONTS THROUGH THUR...AS THE SFC HIGH SHIFTS EAST. MRF PROGS A NLY FLOW ALOFT TO CONT THRU THE WEEK...ALLOWING ANOTHER SURGE OF HIGH PRESS TO SINK SWD. WINDS BACK TO THE NE...BUT REMAINING FAIRLY WEAK. CRP EB 075/088 068/079 064 87034 VCT EB 074/087 059/077 058 87045 LRD EB 075/089 067/079 065 87023 .CRP...SCA GMZ230-235-250-255-270-275. 87 (SYNOPTIC) 81 (MESO)
The office that day
Everything else NWS Corpus Christi, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 7:01 PM CDT | Severe Thunderstorm Warning | CRP | Live Oak, McMullen | 59 min |
| May 20, 8:00 PM CDT | Severe Thunderstorm Warning | CRP | Duval, Webb | 60 min |
| May 20, 8:38 PM CDT | Severe Thunderstorm Warning | CRP | Duval, Live Oak, McMullen | 67 min |
| May 21, 4:41 PM CDT | Severe Thunderstorm Warning | CRP | Bee, Live Oak | 64 min |
| May 21, 4:50 PM CDT | Severe Thunderstorm Warning | CRP | Jim Wells | 55 min |
| May 21, 6:19 PM CDT | Severe Thunderstorm Warning | CRP | Refugio | 56 min |
| May 21, 6:56 PM CDT | Severe Thunderstorm Warning | CRP | San Patricio | 64 min |
| May 21, 6:58 PM CDT | Severe Thunderstorm Warning | CRP | Jim Wells | 47 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.