Alert archive / Texas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 10, NWS Corpus Christi, TX
NWS Corpus Christi, TX issued this severe thunderstorm warning at May 5, 2001, 7:11 PM CDT for Calhoun County, Texas. It was in force for 49 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
- May 5, 2001, 7:11 PM CDT (00:11 UTC)
- Expired
- May 5, 2001, 8:00 PM CDT
- In force
- 49 min
- Issued by
- NWS Corpus Christi, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Calhoun County, TX
The radar
The Corpus Christi radar (KCRP), 123 km from the middle of the area, began a volume at 00:15 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 5, 7:55 PM CDT | Hail 1 | Port Lavaca, TX | |
| May 5, 8:00 PM CDT | Tornado F0 | Port Lavaca, TX | Tornado reported on highway 283. Several telephone poles downed. |
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 116 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
- 1834 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 7.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KCRP 060012 SVRCRP TXC057-060100- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 711 PM CDT SAT MAY 5 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CALHOUN COUNTY IN TEXAS * UNTIL 800 PM CDT * AT 709 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER KAMAY...OR ABOUT 5 MILES SOUTH OF PLACEDO...MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... 2 MILES SOUTH OF KAMAY AROUND 715 PM CDT... 4 MILES SOUTH OF PORT LAVACA AROUND 730 PM CDT... OVER MAGNOLIA BEACH AROUND 745 PM CDT... 3 MILES NORTH OF INDIANOLA AROUND 750 PM CDT... 5 MILES NORTH OF PORT OCONNOR AROUND 800 PM CDT... THIS SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING... HAIL UP TO THE SIZE OF QUARTERS... SEEK A STURDY SHELTER IMMEDIATELY TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS WITH LITTLE WARNING. LAT...LON 2867 9680 2852 9686 2837 9636 2858 9628
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 5, 2:45 PM CDT, 4 hours 26 minutes earlier.
Area forecast discussion, May 5, 2:45 PM CDT, 4 hours 26 minutes before
COASTAL BEND FORECAST DISCUSSION NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 245 PM CDT SAT MAY 5 2001 SHORT TERM...APPEARS ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS ARE FIRING ALONG THE DRYLINE W OF ABI AND SJT THIS AFTERNOON. ALSO...CONVECTION IS BECOMING ORGANIZED JUST NORTH OF CWA BUT MOVING NORTH. ACTIVITY WILL SPREAD EAST AND SHOULD AFFECT N PARTS OF CWA THIS EVENING. RATHER VIGOROUS UPPER SHORTWAVE WILL MOVE THROUGH NORTH TX AND SHOULD SUSTAIN ACTIVITY WELL INTO TONIGHT. WILL THEREFORE...HAVE 30-40 PERCENT POPS OVER MOST N ZONES TONIGHT...20 PERCENT ELSEWHERE. LITTLE CHANGE IS EXPECTED IN SURFACE PATTERN OVER NEXT FEW DAYS. MODELS ARE MAINTAINING GOOD ISENTROPIC LIFT FOR SUNDAY...BUT SIGNIFICANT PRECIPITATION SHOULD BE FOCUSED ALONG STATIONARY BOUNDARY ACROSS NORTHERN AND CENTRAL TX. THERE IS STILL ENOUGH INSTABILITY...AND POSSIBLY AN OUTFLOW BOUNDARY...TO WARRANT POPS FOR DIURNAL ACTIVITY AS ADVERTISED IN THE CURRENT FORECAST. EXTENDED...FRONT WILL NOT MOVE TOO MUCH FURTHER SOUTH AND SHOULD BECOME DIFFUSE BY TUESDAY. TIME HEIGHT PLOTS FROM MRF AND 12Z AVN INDICATE MORE SHALLOW MOISTURE ACROSS AREA BY MIDWEEK. ALSO...WITH UPPER HIGH SHIFTING ACROSS AREA...WILL HAVE DRY WEATHER FOR WEDNESDAY AND THURSDAY. S/W ENERGY SHOULD APPROACH SOUTH TEXAS LATE IN THE WEEK SO WILL LIKELY INTRODUCE POPS AGAIN ON FRIDAY. MARINE...WILL GO WITH SCEC TONIGHT FOR ALL AREAS AS WINDS SPEEDS HAVE DECREASE SOME...AND FORCING WILL BE SLIGHTLY WEAKER TONIGHT. MODELS MAINTAIN A MODERATE SE FLOW...BUT THE GRADIENT WILL BE TIGHT ENOUGH TO WARRANT SCEC CONDITIONS ON SUNDAY. TIDE LEVELS ARE RUNNING .5 TO 1 FOOT ABOVE NORMAL...BUT THIS IS POSING NO PROBLEM CURRENTLY...AND SHOULD DISSIPATE TONIGHT. CRP EE 072/086 069/086 067 72222 VCT EE 069/081 067/083 065 72322 LRD EB 071/091 071/092 069 72211 AP...72 SYN JMC...84 MESO .CRP...NONE.
The office that day
Everything else NWS Corpus Christi, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 7:44 PM CDT | Severe Thunderstorm Warning | CRP | Refugio | 46 min |
| May 5, 10:41 PM CDT | Severe Thunderstorm Warning | CRP | Calhoun | 19 min |
| May 5, 11:21 PM CDT | Severe Thunderstorm Warning | CRP | Webb | 39 min |
| May 5, 11:27 PM CDT | Severe Thunderstorm Warning | CRP | La Salle | 33 min |
| May 6, 5:52 PM CDT | Severe Thunderstorm Warning | CRP | La Salle | 53 min |
| May 6, 6:36 PM CDT | Severe Thunderstorm Warning | CRP | Webb | 54 min |
| May 6, 6:45 PM CDT | Severe Thunderstorm Warning | CRP | La Salle | 60 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.