Alert archive / Texas / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 17, NWS Corpus Christi, TX
NWS Corpus Christi, TX issued this severe thunderstorm warning at Apr 20, 2003, 8:14 AM CDT for Webb County, Texas. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 20, 2003, 8:14 AM CDT (13:14 UTC)
- Expired
- Apr 20, 2003, 9:15 AM CDT
- In force
- 61 min
- Issued by
- NWS Corpus Christi, TX
- Area
- Counties, with a storm outline in the text
County Webb County, TX
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 1.2 hours before the alert went out and 164 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2747 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 304 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KCRP 201314 SVRCRP TXC479-201415- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 813 AM CDT SUN APR 20 2003 THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN WEBB COUNTY IN TEXAS * UNTIL 915 AM CDT * AT 807 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 37 MILES NORTHWEST OF LAS TIENDAS...OR ABOUT 35 MILES SOUTHWEST OF CARRIZO SPRINGS...MOVING EAST AT 25 MPH. THIS SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING... HAIL UP TO THE SIZE OF QUARTERS... WINDS UP TO 60 MILES AN HOUR... VERY HEAVY RAINFALL WHICH MAY CAUSE LOCALIZED FLOODING... THIS IS A DANGEROUS STORM. 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 2821 10024 2803 10028 2787 9963 2814 9957 $$ WC
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 Apr 20, 1:26 AM CDT, 6 hours 48 minutes earlier.
Area forecast discussion, Apr 20, 1:26 AM CDT, 6 hours 48 minutes before
COASTAL BEND FORECAST DISCUSSION NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 126 AM CDT SUN APR 20 2003 SHORT-TERM (TODAY AND TONIGHT)...CONCUR WITH THE GFS/ETA THAT AN UPPER DISUTRBANCE WILL MOVE ACROSS THE REGION TDA. BOTH GFS/ETA PROG INCREASING PW VALUES/DECREASING THERMODYNAMIC CAP TDA. EXPECT QUASI-STATIONARY BNDRY TO TRIGGER SCT CONVECTION OVR THE REGION TDA...WITH THE GREATEST POPS EAST OWING TO MSTR CONSIDERATIONS. DECREASING UPPER DYNAMICS EXPECTED TNGT...HWR WL RETAIN LOWER POPS OVR THE REGION OWING TO MSTR CONVERGENCE. WIND OVR THE WATERS TO REMAIN BELOW SCA CRITERION DRG THE PD OWING PROXIMITY OF SFC BNDRY. LONG-TERM(12Z MON THRU SAT)...QUASI-STATIONARY FRONTAL BOUNDARY/500HPA SHORTWAVES/JET DYNAMICS TO PROVIDE FORCING IN AN UNSTABLE/MOIST ENVIRONMENT MONDAY/TUESDAY. WEAKENING OF WINDS AND COOLING IN THE LOWER TROPOSPHERE ADDS FAVORABILITY. WILL INDICATE CHANCE POPS. GFS INDICATES HIGH PWAT SURGES WEDNESDAY/THURSDAY WITH WEAK 500HPA SHORTWAVES/JET DYNAMICS/MESOSCALE BOUNDARIES. GFS RECENTLY INDICATED HIGH PWAT SURGES OVER THE PAST COUPLE OF DAYS AND WAS DRASTICALLY IN ERROR. WITH WINDS/TEMPERATURES BEGINNING TO UNFAVORABLY INCREASE IN THE LOWER TROPOSPHERE...AM INCLINED TO OMIT POPS AND LET THE NEXT SHIFT MAKE ANOTHER ASSESSMENT. MESOSCALE BOUNDARY LIKELY TO STALL ALONG THE COAST FRIDAY BEFORE DISSIPATING AND ALLOWING RENEWED ONSHORE FLOW SATURDAY. SCA CONDITIONS ANTICIPATED WEDNESDAY/THURSDAY WITH STRENGTHENING LOW-LEVEL JET AND THERMAL/PRESSURE GRADIENTS. MEX TEMPERATURE TRENDS REASONABLE AND IN LINE WITH CURRENT GRIDS. PRELIMINARY NUMBERS: CRP EC 081/069 077/067 077 43423 VCT EC 080/065 074/063 074 42323 LRD EC 085/069 077/068 077 32433 .CRP...NONE. 87/SHORT-TERM 85/LONG-TERM
Hazardous weather outlook, Apr 20, 6:22 AM CDT, 1 hour 52 minutes before
TXZ229>234-239>247-211100- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 622 AM CDT SUN APR 20 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED OVER THE REGION LATER TODAY AND TONIGHT. SOME STORMS MAY BECOME STRONG TODAY...WITH GUSTY WIND AND SMALL HAIL. RAINFALL TOTALS MAY EXCEED ONE INCH TODAY...GENERALLY NORTH OF AN ARTESIA WELLS...GEORGE WEST...VICTORIA LINE...AS SHOWERS AND THUNDERSTORMS CONTINUALLY RE-DEVELOP ALONG A QUASI-STATIONARY FRONTAL BOUNDARY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY SMALL CRAFT ADVISORY CONDITIONS WILL BE POSSIBLE ACROSS THE WATERS WEDNESDAY AND THURSDAY...AS LOW PRESSURE MOVES TO THE TEXAS PANHANDLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. WC/BB
In the hours before
Special weather statement, Apr 20, 6:15 AM CDT, 1 hour 59 minutes before
TXZ229>234-239>247-202300- AREA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 615 AM CDT SUN APR 20 2003 ...STRONG THUNDERSTORMS POSSIBLE TODAY... AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS SOUTH TEXAS TODAY. IN ADDITION...A SURFACE FRONTAL BOUNDARY WILL REMAIN QUASI-STATIONARY ACROSS THE REGION. FURTHER...MOISTURE AND INSTABILITY WILL INCREASE DURING THE DAY ACROSS THE AREA. AS A RESULT...SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS SOUTH TEXAS LATER TODAY. SOME STORMS MAY BECOME STRONG...WITH GUSTY WIND TO 40 MPH AND SMALL HAIL. BRIEF HEAVY RAINFALL IS ALSO POSSIBLE. RAINFALL TOTALS MAY EXCEED ONE INCH...AS SHOWERS AND THUNDERSTORMS CONTINUALLY RE-DEVELOP ALONG AND NEAR THE FRONTAL BOUNDARY...GENERALLY NORTH OF AN ARTESIA WELLS...GEORGE WEST...VICTORIA LINE. RESIDENTS ACROSS SOUTH TEXAS SHOULD CLOSELY MONITOR THIS DEVELOPING WEATHER SITUATION AND BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. EMERGENCY MANAGEMENT OFFICIALS AND SPOTTER GROUPS SHOULD BE PREPARED FOR POSSIBLE ACTIVATION. STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO...OR TELEVISION FOR THE LATEST WEATHER INFORMATION. WC
The office that day
Everything else NWS Corpus Christi, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 10:46 AM CDT | Severe Thunderstorm Warning | CRP | Webb | 44 min |
| Apr 20, 11:32 AM CDT | Severe Thunderstorm Warning | CRP | Webb | 43 min |
| Apr 20, 12:57 PM CDT | Severe Thunderstorm Warning | CRP | Calhoun, Refugio, Victoria | 48 min |
| Apr 20, 1:49 PM CDT | Severe Thunderstorm Warning | CRP | Aransas, Calhoun | 41 min |
| Apr 20, 1:56 PM CDT | Special Marine Warning | CRP | 94 min |
Nearby
Severe Thunderstorm Warnings in Texas, 2003Every severe thunderstorm warning in 2003
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.