Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 76, NWS Corpus Christi, TX

July 15, 2007Nueces County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Jul 15, 2007, 6:50 PM CDT for Nueces County, Texas. It was in force for 40 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
Jul 15, 2007, 6:50 PM CDT (23:50 UTC)
Expired
Jul 15, 2007, 7:30 PM CDT
In force
40 min
Issued by
NWS Corpus Christi, TX
Area
Counties, with a storm outline in the text

County Nueces County, TX

The radar

The Corpus Christi radar (KCRP), 5 km from the middle of the area, began a volume at 23:50 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 nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 11.8 hours before the alert went out and 17 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 2007-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1075 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 2007-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.1939Sfc1 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
1075 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
1038 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Jul 15, 3:29 PM CDT, 3 hours 21 minutes earlier.

Area forecast discussion, Jul 15, 3:29 PM CDT, 3 hours 21 minutes before
AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
329 PM CDT SUN JUL 15 2007

...UPDATE FOR PRELIM TEMPS/POPS SECTION...

.SHORT TERM (TONIGHT THROUGH MONDAY NIGHT)...SHOWERS STARTING TO
DEVELOP FROM GOLIAD...SW TO NEAR LAREDO...WHICH IS ALSO WHERE THE
LOW TO MID LEVEL TROF AXIS LIES. EXPECT SHOWERS AND THUNDERSTORMS
TO INCREASE ALONG A LINE FROM VCT TO LRD THROUGH THE REST OF THE
DAYTIME PERIOD AS TEMPS CONTINUE TO CLIMB. RELATIVELY LIGHT
STEERING FLOW COULD RESULT IN LOCALLY HEAVY RAINFALL AMTS WITH ANY
STRONGER SHOWERS. FOR TONIGHT...EXPECT ANY CONVECTION TO DIE
DOWN WITH THE LOSS OF HEATING. MODELS ALL INDICATING THAT A WEAK
UPPER LEVEL LOW CENTER/TROF WILL SAG SW OVER THE REGION...BUT SEEM
TO BE TRENDING TOWARD THE TROF AXIS STAYING CLOSE TO THE COAST
THROUGH THE PERIOD. THE GFS APPEARS TO BE SUFFERING FROM CONVECTIVE BLOW
UPS SOUTH OF THE REGION LATE TONIGHT/EARLY MON...WHICH MAY BE
ERRONEOUSLY INFLATING MOISTURE/POPS FOR MON. HAVE MADE VERY LITTLE
CHANGE TO POPS MONDAY...WITH HIGHEST (40-50%) POPS REMAINING
CLOSER TO THE COAST. AGAIN...GIVEN VERY WEAK UPPER LEVEL
SUPPORT...EXPECT CONVECTION TO DIE DOWN AFTER SUNSET...EXCEPT OVER
WARMER GULF WATERS WHERE COULD REFORM. TEMPS SHOULD CONTINUE
SLIGHTLY BELOW NORMAL OVER MUCH OF THE REGION GIVEN CLOUDS AND
CHANCES FOR PRECIP.

&&

.LONG TERM...(TUESDAY THROUGH SUNDAY)...AFTER MVG THE UPR TROUGH AXIS
AND WEAK UPPER LOW FURTHER EAST THE LAST FEW DAYS THE NAM AND GFS
HAVE DECIDED TO NUDGE IT SLIGHTLY BACK TO THE WEST TODAY. THIS IS
LEANING BACK TOWARD THE ECMWF TRACK OF THIS SYSTEM...WHICH HAS
ALWAYS BEEN THE MOST CONSISTENT. BASED ON THIS WILL RUN WITH THE
GFS/ECM SOLN FOR THE EXT PERIODS...ALTHOUGH HAVE TO IGNORE SEVERAL
ISSUES IN THE GFS CAUSED BY CONVECTIVE FEEDBACK (MAINLY IN WIND
FIELDS).

BASED ON THIS STILL LOOKS LIKE HIGH POPS AND LOCALLY HEAVY RAINFALL
WILL VERIFY DURING THE TUE THROUGH THU TIME FRAME. INITIALLY THE
HIGHEST POPS AND HEAVIEST RAINFALL SHOULD OCCUR CLOSER TO THE COAST
AND OFFSHORE ON TUESDAY...BUT THE THREAT SHOULD SPREAD WEST WITH
TIME AS THE WEAKENING UPR SYSTEM DRIFTS WEST INTO MEXICO. WILL
CONTINUE TO SHOW HIGH SCT TO LIKELY POPS TUE AND WED AND HIGH SCT
POPS AGAIN ON THU. WILL ALSO ISSUE SPS TO DISCUSS POTENTIAL FOR
HEAVY RAINFALL THESE DAYS ESP SINCE THIS WILL BE A MAJOR DISRUPTION
TO LOCAL AGRICULTURE ATTEMPTS AT HARVESTING GRAIN (ALREADY DELAYED
BY PREVIOUS RAINS THIS MONTH). LOCALIZED 3 TO 5 INCH RAINFALL TOTALS
WILL BE POSSIBLE EACH DAY TUE-THU WITH STRONGER STORMS. 3 DAY
RAINFALL TOTALS AROUND 2 TO 4 INCHES ARE LIKELY AS WELL WITH
ISOLATED 5 TO 10 INCH TOTALS POSSIBLE. SEA BREEZE SHOULD REMAIN
ACTIVE THROUGH THE REMAINDER OF THE PERIOD AS MOISTURE VALUES REMAIN
HIGH. THIS WILL KEEP SCT POPS GOING INTO THE WEEKEND WITH POPS JUST
SLOWLY . WILL CONTINUE TO UNDERCUT MOS HIGH TEMPS MUCH OF THIS
PERIOD.

&&

.MARINE...WINDS HAVE GENERALLY SETTLED DOWN TO AROUND 15 KTS OVER
MUCH OF THE REGION. HAVE KEPT 10-15 KT SSE FLOW THROUGH THE PERIOD
WITH SCT SHOWERS AND THUNDERSTORMS.

&&

.PRELIMINARY POINT TEMPS/POPS...
CORPUS CHRISTI    75  90  75  88  74  /  20  40  30  60  40
VICTORIA          72  91  73  87  72  /  30  40  30  60  40
LAREDO            78  97  77  94  76  /  20  20  20  50  40
ALICE             74  94  72  88  73  /  30  40  30  60  40
ROCKPORT          78  89  77  86  77  /  20  40  30  60  50
COTULLA           73  95  73  90  72  /  20  20  10  40  40
KINGSVILLE        75  93  73  88  74  /  20  40  30  60  40
NAVY CORPUS       78  89  78  87  77  /  20  40  40  60  50

&&

.CRP WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...NONE.

&&

RM/33...SHORT TERM
MG/88...LONG TERM
Hazardous weather outlook, Jul 15, 5:04 AM CDT, 13 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
504 AM CDT SUN JUL 15 2007

GMZ230-235-250-255-270-275-TXZ229>234-239>247-161015-
BAYS AND WATERWAYS FROM BAFFIN BAY TO PORT ARANSAS-
BAYS AND WATERWAYS FROM PORT ARANSAS TO PORT OCONNOR-
COASTAL WATERS BAFFIN BAY TO PORT ARANSAS OUT 20 NM-
COASTAL WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT 20 NM-
WATERS BAFFIN BAY TO PORT ARANSAS 20 TO 60 NM-
WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL 20 TO 60 NM-
LA SALLE-MCMULLEN-LIVE OAK-BEE-GOLIAD-VICTORIA-WEBB-DUVAL-
JIM WELLS-KLEBERG-NUECES-SAN PATRICIO-ARANSAS-REFUGIO-CALHOUN-
504 AM CDT SUN JUL 15 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS AND THE MIDDLE
TEXAS COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS ACROSS THE ENTIRE OUTLOOK AREA.
SOME STORMS MAY CONTAIN HEAVY RAINFALL FROM 1 TO 3 INCHES WHICH
MAY LEAD TO BRIEF LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SCATTERED THUNDERSTORMS WITH HEAVY RAIN WILL AFFECT THE COASTAL BEND
ON MONDAY.  THESE THUNDERSTORMS WILL BECOME MORE NUMEROUS ON
TUESDAY...WEDNESDAY AND THURSDAY.  HEAVY RAIN AND POSSIBLE FLOODING
WILL BE LIKELY THROUGH THURSDAY.  WIDESPREAD 2 TO 4 INCHES OF
RAINFALL WITH ISOLATED 5 TO 10 INCHES WILL BE POSSIBLE THROUGH
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

JAR/MB

In the hours before

Special weather statement, Jul 15, 4:14 PM CDT, 2 hours 36 minutes before
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Special weather statement, Jul 15, 4:19 PM CDT, 2 hours 31 minutes before
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Special weather statement, Jul 15, 4:45 PM CDT, 2 hours 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
445 PM CDT SUN JUL 15 2007

TXZ239-152215-
WEBB-
445 PM CDT SUN JUL 15 2007

...A STRONG THUNDERSTORM WAS AFFECTING WEBB COUNTY...

AT 441 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 12 MILES SOUTH OF AGUILARES...OR 15 MILES
SOUTHWEST OF MIRANDO CITY...MOVING SOUTH AT 15 MPH.

SMALL HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

87
Special weather statement, Jul 15, 4:48 PM CDT, 2 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
448 PM CDT SUN JUL 15 2007

TXZ234-152215-
VICTORIA-
448 PM CDT SUN JUL 15 2007

...A STRONG THUNDERSTORM WAS AFFECTING VICTORIA COUNTY...

AT 446 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR TELFERNER...OR 8 MILES EAST OF VICTORIA...
MOVING NORTHEAST AT 5 MPH.

THIS STORM WILL BE NEAR...
  TELFERNER BY 500 PM CDT.
  INEZ BY 515 PM CDT.

SMALL HAIL...AND WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

87
Special weather statement, Jul 15, 5:59 PM CDT, 51 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
559 PM CDT SUN JUL 15 2007

TXZ244-246-152345-
REFUGIO-SAN PATRICIO-
559 PM CDT SUN JUL 15 2007

...A STRONG THUNDERSTORM WAS AFFECTING REFUGIO AND SAN PATRICIO
COUNTIES...

AT 555 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 8 MILES SOUTHWEST OF WOODSBORO...MOVING SOUTHWEST
AT 5 MPH.

WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

87
Special weather statement, Jul 15, 6:00 PM CDT, 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
600 PM CDT SUN JUL 15 2007

TXZ243-244-152345-
NUECES-SAN PATRICIO-
600 PM CDT SUN JUL 15 2007

...A STRONG THUNDERSTORM WAS AFFECTING NUECES AND SAN PATRICIO
COUNTIES...

AT 555 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR EDROY...OR 5 MILES NORTH OF ROBSTOWN. THIS
STORM WAS  NEARLY STATIONARY.

WINDS 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

87

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 4:32 PM CDTSevere Thunderstorm WarningCRPRefugio28 min
Jul 15, 6:05 PM CDTSevere Thunderstorm WarningCRPNueces40 min
Jul 15, 6:37 PM CDTSevere Thunderstorm WarningCRPJim Wells38 min

Nearby

Severe Thunderstorm Warnings in Texas, 2007Every severe thunderstorm warning in 2007

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.