Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 2, NWS Corpus Christi, TX

March 28, 2001Live Oak County, McMullen County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Mar 28, 2001, 10:07 AM CST for Live Oak County, McMullen County, Texas. It was in force for 53 min. 1 report 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
Mar 28, 2001, 10:07 AM CST (16:07 UTC)
Expired
Mar 28, 2001, 11:00 AM CST
In force
53 min
Issued by
NWS Corpus Christi, TX
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Live Oak County, TX, McMullen County, TX

The radar

The Corpus Christi radar (KCRP), 122 km from the middle of the area, began a volume at 16:09 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

TimeReportWhereRemark
Mar 28, 11:05 AM CSTHail 0.75Three Rivers, TXHail fell on Interstate 37.

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 12:00Z, 4.1 hours before the alert went out and 138 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 2001-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 71 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 2001-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 square meters per square second.1939587897Sfc1 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
71 J/kg
Mixed-layer CIN
-480 J/kg
Mixed-layer LCL
601 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KCRP 281609
SVRCRP
TXC297-311-281700-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
1007 AM CST WED MAR 28 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN LIVE OAK COUNTY IN TEXAS
  NORTHEASTERN MCMULLEN COUNTY IN TEXAS

* UNTIL 1100 AM CST

* AT 1006 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CROSS...OR ABOUT 6 MILES NORTH OF
  TILDEN...MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  4 MILES SOUTHEAST OF CROSS AROUND 1015 AM CST...
  8 MILES NORTH OF CALLIHAM AROUND 1035 AM CST...
  6 MILES NORTH OF CHOKE CANYON AROUND 1045 AM CST...
  OVER WHITSETT AROUND 1055 AM CST...

THIS SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING...
  HAIL UP TO THE SIZE OF DIMES...

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


LAT...LON 2854 9872 2841 9857 2839 9798 2875 9812

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 Mar 28, 9:30 AM CST, 37 minutes earlier.

Area forecast discussion, Mar 28, 9:30 AM CST, 37 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
930 AM CST WED MAR 28 2001

CONVECTION IS REALLY BEGINNING TO FIRE UP ACROSS THE CWFA.  THIS IS
IN RESPONSE TO THE LFQ OF AN APPROACHING STRONG SUBTROPICAL JET
MOVING THROUGH NRN MEXICO AND EXTREME DEEP SOUTH TX.  ALSO...WV
IMAGERY DEPICTED A WELL-DEFINED VORT MAX TO THE SOUTHWEST OF THE BIG
BEND RGN.  MEANWHILE...THE FNTL BNDRY WAS MOVING EVER SO SLOWLY SEWD
THROUGH THE OFFSHORE WATERS.  ALL OF THESE FACTORS LEAD TO
INCREASING POPS ONCE AGAIN FOR THE ENTIRE CWFA.

THE NEXT ISSUE TO DEAL WITH IS THE POTENTIAL FOR SVR STORMS.  WBZ
HEIGHTS ARE EXPECTED TO SLOWLY FALL TODAY AS HEIGHTS FALL AND THE
COLUMN COOLS.  BOTH THE CRP AND DRT SOUNDINGS INDICATED MID LVL DRY
AIR WITH DECENT MID LVL LAPSE RATES AS WELL.  I AM CONCERNED ABOUT
THE POTENTIAL FOR A FEW STORMS TURNING SVR WITH HAIL AND WIND THE
MAIN THREATS.  WL LKLY ISSUE AN SPS AND MAY ALSO MENTION THIS IN THE
ZONES.

WL NEED TO REDUCE TEMPS AT LEAST A CATEGORY OR TWO GIVEN THE THICK
CLOUDS AND THE COOL AIRMASS CURRENTLY IN PLACE.

MARINE...WL GROUP THE NEARSHORE AND OFFSHORE WATERS TOGETHER SINCE
THE FNTL BNDRY XHAS ALREADY MADE IT THROUGH THE OFFSHORE WATERS.  WL
STILL MAINTAIN AN SCA DUE TO HIGH SWELLS.

MB

.CRP...SCA GMZ270-275.

In the hours before

Special weather statement, Mar 28, 9:48 AM CST, 19 minutes before
TXZ229>234-239>247-282300-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
948 AM CST WED MAR 28 2001

...SEVERE WEATHER IS POSSIBLE TODAY...

AN UPPER LEVEL DISTURBANCE ALONG WITH ABUNDANT MOISTURE WILL PRODUCE
WIDESPREAD SHOWERS AND THUNDERSTORMS ACROSS SOUTH TEXAS TODAY.  DUE
TO THE COOL AND DRY AIR ALOFT...THERE IS THE POTENTIAL FOR A FEW OF
THESE STORMS TO BECOME SEVERE.  THE MAIN THREAT WOULD BE FROM LARGE
HAIL AND STRONG WIND GUSTS.  THE THREAT FOR SEVERE THUNDERSTORMS
WILL END BY THIS EVENING.

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.

SEVERE THUNDERSTORMS ARE CAPABLE OF PRODUCING LARGE HAIL AND STRONG
WINDS IN EXCESS OF 58 MPH. 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.

MB

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 27, 10:29 PM CSTSevere Thunderstorm WarningCRPGoliad46 min
Mar 28, 11:02 AM CSTSevere Thunderstorm WarningCRPBee, Goliad58 min
Mar 28, 11:02 AM CSTSevere Thunderstorm WarningCRPLive Oak58 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.