Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 35, NWS Corpus Christi, TX

May 21, 2001San Patricio County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at May 21, 2001, 6:56 PM CDT for San Patricio County, Texas. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 21, 2001, 6:56 PM CDT (23:56 UTC)
Expired
May 21, 2001, 8:00 PM CDT
In force
64 min
Issued by
NWS Corpus Christi, TX
Area
Whole counties

County San Patricio County, TX

The radar

The Corpus Christi radar (KCRP), 25 km from the middle of the area, began a volume at 23:57 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 21, 3:45 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 11.9 hours before the alert went out and 36 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.

Skew-T log-pSkew-T log-p diagram, Corpus Christi, TX at 12:00Z on 2001-05-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1153 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 12:00Z on 2001-05-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 253 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1153 J/kg
Mixed-layer CIN
-306 J/kg
Mixed-layer LCL
718 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
253 m²/s²
0-3 km storm-relative helicity
248 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KCRP 212357
SVRCRP
TXC409-220100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
656 PM CDT MON MAY 21 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SAN PATRICIO COUNTY IN TEXAS

* UNTIL 800 PM CDT

* AT 651 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 7 MILES SOUTH OF TYNAN...OR ABOUT 7 MILES EAST
  OF MATHIS...MOVING SOUTHEAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  4 MILES NORTHEAST OF ODEM AROUND 750 PM CDT...
  4 MILES SOUTHWEST OF SINTON...8 MILES WEST OF TAFT SOUTHWEST...9
  MILES WEST OF TAFT AROUND 800 PM CDT...

THIS SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING...
  HAIL UP TO THE SIZE OF DIMES...
  WINDS UP TO 60 MILES AN HOUR...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.


TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS WITH LITTLE
WARNING.

$$

LAT...LON 2815 9779 2797 9775 2785 9733 2812 9741

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 21, 2:15 PM CDT, 4 hours 41 minutes earlier.

Area forecast discussion, May 21, 2:15 PM CDT, 4 hours 41 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
215 PM CDT MON MAY 21 2001

SHORT TERM...MSAS REVEALS SURFACE FRONT APPROACHING THE NRN CWA.
EXPECT FROPA OVER THE CWA THIS EVENING/TONIGHT...AS THE
CORRESPONDING UPPER TROUGH/LOW MOVES EAST ACROSS THE PLAINS.  MOST
RECENT GOES PROXIMITY SOUNDINGS INDICATE THAT THE CIN HAS DIMINISHED
SIGNIFICANTLY. IN FACT...WDLY SCT CONVECTION HAS ALREADY OCCURRED
OVR PORTIONS OF MAINLY DEEP SOUTH TX. FURTHER...THE CWA WL REMAIN
UNDER THE RRQ OF AN UPPER JET STREAK. AS THE FRONT MOVES ACROSS...
EXPECT IT TO TRIGGER CONVECTION. VERTICAL SHEAR MAY STILL SUPPORT
STG TO SEVERE ACTIVITY...MAINLY ALONG THE FRONT. WL MAINTAIN POPS
THIS EVENING/EARLY TONIGHT OVER THE CWA. BY TUESDAY...EXPECT
SIGNIFICANT DRYING.

EXTENDED...THE MRF CONTINUES TO STALL THE FOREGOING UPPER LOW...WITH
THE CENTER OVER THE MIDWEST...THROUGH FRIDAY...THEN LIFTS IT NEWD
SAT/SUNDAY. A WEAK SECONDARY SURGE/FNT STILL ANTICIPATED BY FRIDAY...
HWR DO NOT ANTICIPATE PCPN OWING TO INSUFFICIENT MSTR.

MARINE...FROPA EXPECTED BY LATE AFTERNOON FOR THE BAYS AND OFFSHORE
THIS EVENING. STRONG NLY WINDS BEHIND CF WILL WARRANT SCAS FOR ALL
MARINE ZONES. SCT TO NUM TSRAS EXPECTED AS FRONT PUSHES OFFSHORE
DUE TO AMPLE MOISTURE...THETA E RIDGING...LIFT...POLAR
JET...WEAKENING CAP...ETC. WILL ISSUE MWS WITH LATEST INFO ON FRONT.
BY TUE AFTERNOON...HIGH PRESS SETTLES ACROSS THE AREA WITH IMPROVING
CONDITIONS AND RELAXING GRADIENT. NO SCAS EXPECTED THE REMAINDER OF
THE WEEK. ONSHORE FLOW RAPIDLY RETURNS BY WED AS THE HIGH SHIFTS E.
ANOTHER SURGE OF HIGH PRESS SINKS SWD WITH WINDS BACKING TO THE NE
BY THU NIGHT/FRI MORN. RETURN FLOW SETS UP AGAIN BY LATE FRI AS HIGH
SHIFTS EAST.

CRP BU 064/083 062/088 068 87400
VCT BU 058/083 060/088 065 87400
LRD BU 064/085 065/090 065 87200

.CRP...SCA GMZ230-235-250-255-270-275.

87 (SYNOPTIC)
81 (MESO)

In the hours before

Special weather statement, May 21, 3:40 PM CDT, 3 hours 16 minutes before
TXZ231>234-241-243>247-220200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
340 PM CDT MON MAY 21 2001

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM CDT...

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH
VALID UNTIL 9 PM CDT MONDAY EVENING. THE WATCH INCLUDES THE
COUNTIES OF ARANSAS...BEE...CALHOUN...GOLIAD...JIM WELLS...KLEBERG...
LIVE OAK...NUECES...REFUGIO...SAN PATRICIO AND VICTORIA.

SOME CITIES INCLUDED IN THE WATCH ARE ALICE...ARANSAS PASS...
BEEVILLE...CHOKE CANYON...CORPUS CHRISTI...HOLIDAY BEACH...
INGLESIDE...LAKE CORPUS CHRISTI...LONG MOTT...MATHIS...PLACEDO...
PORT LAVACA...PORT OCONNOR...PORTLAND... PREMONT...ROBSTOWN...
ROCKPORT...SEADRIFT...SINTON...SKIDMORE...VICTORIA AND WOODSBORO.

THIS SEVERE THUNDERSTORM WATCH INCLUDES THE BAYS AND INLAND
WATERWAYS...FROM PORT OCONNOR TO BAFFIN BAY...AS WELL AS THE NEAR
SHORE WATERS FROM BAFFIN BAY TO THE MATAGORDA SHIP CHANNEL OUT TO 20
NAUTICAL MILES.

A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE
THUNDERSTORMS TO OCCUR IN OR NEAR THE WATCH AREA. SEVERE
THUNDERSTORMS ARE CAPABLE OF PRODUCING LARGE HAIL THE SIZE OF A DIME
OR LARGER...STRONG WINDS OF 58 MPH OR GREATER AND EVEN TORNADOES.

EMERGENCY MANAGERS AND SPOTTER GROUPS SHOULD BE PREPARED FOR POSSIBLE
ACTIVATION. RESIDENTS ACROSS SOUTH TEXAS SHOULD REMAIN ALERT AND BE
READY TO ACT QUICKLY IF THREATENING WEATHER APPROACHES YOUR AREA. IF
SEVERE WEATHER THREATENS YOUR AREA...THEN MOVE TO AN INTERIOR ROOM
AND LAY DOWN ON THE FLOOR. IF CAUGHT OUTSIDE...LAY FLAT DOWN ON THE
GROUND...PREFERABLY IN A DITCH OR OTHER LOW SPOT. NEVER TRY TO OUTRUN
SEVERE WEATHER.

GW
Special weather statement, May 21, 5:00 PM CDT, 1 hour 56 minutes before
TXZ231>234-240-243>247-220300-

SPECIAL WEATHER STATEMENT...UPDATED.
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
500 PM CDT MON MAY 21 2001

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM CDT...

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WATCH
VALID UNTIL 9 PM CDT MONDAY EVENING. THE WATCH INCLUDES THE
COUNTIES OF ARANSAS...BEE...CALHOUN...GOLIAD...JIM WELLS...KLEBERG...
DUVAL...LIVE OAK...NUECES...REFUGIO...SAN PATRICIO AND VICTORIA.

SOME CITIES INCLUDED IN THE WATCH ARE ALICE...ARANSAS PASS...
BEEVILLE...CHOKE CANYON...CORPUS CHRISTI...HOLIDAY BEACH...
INGLESIDE...LAKE CORPUS CHRISTI...LONG MOTT...MATHIS...PLACEDO...
PORT LAVACA...PORT OCONNOR...PORTLAND... PREMONT...ROBSTOWN...
ROCKPORT...SEADRIFT...SINTON...FREER...SKIDMORE...VICTORIA AND
WOODSBORO.

THIS SEVERE THUNDERSTORM WATCH INCLUDES THE BAYS AND INLAND
WATERWAYS...FROM PORT OCONNOR TO BAFFIN BAY...AS WELL AS THE NEAR
SHORE WATERS FROM BAFFIN BAY TO THE MATAGORDA SHIP CHANNEL OUT TO 20
NAUTICAL MILES.

A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE
THUNDERSTORMS TO OCCUR IN OR NEAR THE WATCH AREA. SEVERE
THUNDERSTORMS ARE CAPABLE OF PRODUCING LARGE HAIL THE SIZE OF A DIME
OR LARGER...STRONG WINDS OF 58 MPH OR GREATER AND EVEN TORNADOES.

EMERGENCY MANAGERS AND SPOTTER GROUPS SHOULD BE PREPARED FOR POSSIBLE
ACTIVATION. RESIDENTS ACROSS SOUTH TEXAS SHOULD REMAIN ALERT AND BE
READY TO ACT QUICKLY IF THREATENING WEATHER APPROACHES YOUR AREA. IF
SEVERE WEATHER THREATENS YOUR AREA...THEN MOVE TO AN INTERIOR ROOM
AND LAY DOWN ON THE FLOOR. IF CAUGHT OUTSIDE...LAY FLAT DOWN ON THE
GROUND...PREFERABLY IN A DITCH OR OTHER LOW SPOT. NEVER TRY TO OUTRUN
SEVERE WEATHER.

BL
Special weather statement, May 21, 6:48 PM CDT, 8 minutes before
TXZ231>234-220545-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
648 PM CDT MON MAY 21 2001

...SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED...

THE SEVERE THUNDERSTORM WATCH VALID UNTIL 9 PM CDT HAS BEEN
CANCELLED FOR THE FOLLOWING COUNTIES...BEE...GOLIAD...LIVE OAK AND
VICTORIA. CITIES NO LONGER IN THE WATCH INCLUDE BEEVILLE...CHOKE
CANYON...LAKE CORPUS CHRISTI...PLACEDO...SKIDMORE AND VICTORIA.

A COLD wFRONT HAS PUSHED THROUGH THE AREA...CREATING A DRIER AND MORE
STABLE ATMOSPHERE.  AS A RESULT...SEVERE WEATHER IS NO LONGER
EXPECTED IN THE AFOREMENTIONED COUNTIES.

GW

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 20, 7:01 PM CDTSevere Thunderstorm WarningCRPLive Oak, McMullen59 min
May 20, 7:11 PM CDTSevere Thunderstorm WarningCRPDuval, Webb64 min
May 20, 8:00 PM CDTSevere Thunderstorm WarningCRPDuval, Webb60 min
May 20, 8:38 PM CDTSevere Thunderstorm WarningCRPDuval, Live Oak, McMullen67 min
May 21, 4:41 PM CDTSevere Thunderstorm WarningCRPBee, Live Oak64 min
May 21, 4:50 PM CDTSevere Thunderstorm WarningCRPJim Wells55 min
May 21, 6:19 PM CDTSevere Thunderstorm WarningCRPRefugio56 min
May 21, 6:58 PM CDTSevere Thunderstorm WarningCRPJim Wells47 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.