Alert archive / Texas / Tornado Warnings in 2008

Tornado Warning 12, NWS Corpus Christi, TX

July 23, 2008Nueces County, Texas

NWS Corpus Christi, TX issued this tornado warning at Jul 23, 2008, 9:18 AM CDT for Nueces County, Texas. It was in force for 10 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: Jul 23, 2008, 9:18 AM CDT (14:18 UTC)
Expired: Jul 23, 2008, 9:28 AM CDT
In force: 10 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon

County Nueces County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 22, 10:27 PM CDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 2.3 hours before the alert went out and 46 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 232 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 599 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 112 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
WFUS54 KCRP 231419
TORCRP
TXC355-231445-
/O.NEW.KCRP.TO.W.0012.080723T1418Z-080723T1445Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
918 AM CDT WED JUL 23 2008

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN NUECES COUNTY IN SOUTH TEXAS

* UNTIL 945 AM CDT

* AT 912 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHEAST OF PETRONILA...OR ABOUT 14 MILES SOUTHWEST OF CORPUS
  CHRISTI...MOVING WEST AT 28 MPH.

* THE TORNADO WILL BE NEAR...
  DRISCOLL BY 935 AM CDT...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 AM CDT WEDNESDAY MORNING
FOR CENTRAL TEXAS.

LAT...LON 2762 9790 2763 9790 2763 9791 2773 9794
      2768 9752 2756 9752
TIME...MOT...LOC 1418Z 093DEG 24KT 2760 9762

$$

TMT

1 follow-up statement

000 
WWUS54 KCRP 231428
SVSCRP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
928 AM CDT WED JUL 23 2008

TXC355-231438-
/O.CAN.KCRP.TO.W.0012.000000T0000Z-080723T1445Z/
NUECES-
928 AM CDT WED JUL 23 2008

...THE TORNADO WARNING FOR SOUTHERN NUECES COUNTY IS CANCELLED...

THE THUNDERSTORM THAT PROMPTED THE TORNADO WARNING HAS WEAKENED
AND MOVED INTO NORTHERN KLEBERG COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 AM CDT WEDNESDAY MORNING
FOR SOUTH TEXAS.

LAT...LON 2762 9790 2763 9790 2763 9791 2773 9794
      2768 9752 2756 9752
TIME...MOT...LOC 1428Z 093DEG 24KT 2760 9770

$$

TMT

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Jul 23, 5:14 AM CDT, 4 hours 4 minutes earlier.

Area forecast discussion, Jul 23, 5:14 AM CDT, 4 hours 4 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
514 AM CDT WED JUL 23 2008

.SHORT TERM (TODAY THROUGH THURSDAY)...INTENSIFYING HURRICANE
DOLLY IS STILL PROGGED TO MAKE LANDFALL NEAR PORT ISABEL EARLY
THIS AFTERNOON. THE MAIN IMPACTS OVER LAND WL BE TROPICAL STORM
FORCE WIND GUSTS...HEAVY RAIN AND THE POSSIBILITY OF A FEW
TORNADOES. SUSTAINED TROPICAL FORCE WINDS WL BE POSSIBLE LATE THIS
MORNING THROUGH EARLY AFTN ACROSS NUECES AND KLEBERG COUNTIES AS
DOLLY NEARS THE DEEP SOUTH TX COASTLINE. HOWEVER...MOST OF THE WIND
WL BE CONFINED TO GUSTS EMBEDDED WITHIN APPROACHING SQUALLS. RAIN
BANDS WL BECOME MORE NUMEROUS THROUGHOUT THE DAY. RAIN ACTIVITY
MAY ACTUALLY DIMINISH THIS EVENING BEFORE PICKING UP AGAIN LATER
TNT AND THURSDAY AS DEEP ELY/SELY FLOW ESTABLISHES ITSELF ON THE
MOIST SIDE OF DOLLY. ALTHOUGH THE FFG VALUES ARE QUITE HIGH ACROSS THE
AREA...BLV THAT WITH SUCH A SLOW MOVEMENT OF DOLLY AND CONTINUED
HEAVY RAIN BANDS AFFECTING THE RGN...THAT A FLOOD WATCH IS
WARRANTED AT THIS TIME. FOR NOW...WL CONFINE THE FLOOD WATCH TO
THE SRN HALF OF THE CWA AND EXTEND IT THROUGH THURSDAY. SUFFICIENT
LOW-LVL HELICITY AND JUST ENOUGH INSTABILITY ALONG WITH THE
FAVORED NRN/NERN QUADRANTS WL FAVOR A CONTINUED THREAT FOR
TORNADOES THROUGH THE PD...ESPECIALLY THIS AFTN/EVE. SPC ALREADY
HAS A TORNADO WATCH FOR A PORTION OF THE COASTAL BEND AND THIS WL
LKLY BE EXPANDED TO OTHER COUNTIES THROUGHOUT THE DAY. MINOR
COASTAL FLOODING AND BEACH EROSION WL BE POSSIBLE ACROSS THE
GULF-FACING BEACHES...ESPECIALLY SOUTH OF BOB HALL PIER.

&&

.LONG TERM (THURSDAY NIGHT THROUGH WEDNESDAY)...MODELS ARE SHOWING
RESIDUAL RAIN SHIFTING W AND EXITING THE CWA THU NIGHT INTO FRI
MORNING. WINDS AND SEAS WILL BE ON THE DECEASE AS WELL. THE MODELS
KEEP POCKETS OF 2 INCH PWAT ACROSS S TX INTO FRI ALONG WITH AN
EMBEDDED SHORT WAVE IN THE SE FLOW ALOFT...THEREFORE WENT WITH A
BROAD BRUSHED SLIGHT CHC OF PRECIP ON FRI. DID NOT WANT TO GO ANY
HIGHER WITH THE POPS DUE TO THE RIDGE BLDG IN FROM THE NE IN THE
WAKE OF WHATS LEFT OF DOLLY ALONG WITH INCREASING SUBSIDENCE/DRYING
IN THE MID/UPPER LEVELS.  FOR THE WEEKEND...THE RIDGE CONTINUES TO
BLD AND DECREASES THE MOISTURE ACROSS THE AREA. THE WEEKEND LOOKS
MORE SUMMER LIKE WITH DRY AND HOT CONDITIONS. THE MOISTURE WILL BE
LIMITED AND ANY SEA BREEZE ACTIVITY WILL BE ISOL AT BEST. FOR NOW
HAVE KEPT THE DAYTIME 10 POPS THROUGH THE EXTENDED WITH NO MENTION
OF PRECIP.

&&

.AVIATION...WIDESPREAD MVFR CONDITIONS WL DEVELOP FROM EAST TO
WEST TDA AS DOLLY MOVES TWDS DEEP SOUTH TX. STRONG WIND GUSTS
BETWEEN 30 AND 50 KTS WL BE POSSIBLE AS RAIN BANDS ASSOCIATED WITH
DOLLY MOVE INLAND. BRIEF IFR CONDITIONS WL BE POSSIBLE WITH THE
HEAVIER RAIN. THESE CONDITIONS WL PERSIST THROUGH MUCH OF TNT.

&&

.MARINE...SUSTAINED TROPICAL STORM FORCE WINDS WL CONTINUE
THROUGH THIS EVENING ACROSS THE WATERS...ESPECIALLY SOUTH OF PORT
ARANSAS. TROPICAL STORM FORCE WIND GUSTS WL STILL LINGER THROUGH
TNT AND THEN END ON THURSDAY MORNING. INCREASING LOW LVL HELICITY
WL MEAN THE POSSIBILITY OF WATERSPOUTS THROUGH TNT. SEAS WL PEAK
BETWEEN 15 AND 18 FT TDA OVER THE OFFSHORE WATERS WITH A SLOW
DECLINE THEREAFTER. THE WAVEWATCH MODEL KEPT IN AT LEAST 10 FT
SEAS EVEN LATE THU. WITH CONTINUED SWELL ACTIVITY...BLV THAT THE
SEAS WL REACH AT LEAST TO THE WAVEWATCH VALUES ON THU.

&&

.PRELIMINARY POINT TEMPS/POPS...
CORPUS CHRISTI    86  78  85  78  90  / 100 100 100  30  20
VICTORIA          88  76  86  76  92  / 100 100  80  20  20
LAREDO            97  78  82  78  94  /  70 100 100  50  20
ALICE             89  78  85  77  92  / 100 100 100  40  20
ROCKPORT          86  79  85  79  91  / 100 100  90  20  20
COTULLA           95  76  85  75  93  /  60 100 100  50  20
KINGSVILLE        88  78  85  77  90  / 100 100 100  30  20
NAVY CORPUS       86  80  85  79  89  / 100 100  90  20  20

&&

.CRP WATCHES/WARNINGS/ADVISORIES...
TX...TROPICAL STORM WARNING FOR THE FOLLOWING ZONES: ARANSAS...
     CALHOUN...REFUGIO...SAN PATRICIO.

     HURRICANE WARNING FOR THE FOLLOWING ZONES: KLEBERG...NUECES.

     FLOOD WATCH FROM 1 PM CDT THIS AFTERNOON THROUGH THURSDAY
     AFTERNOON FOR THE FOLLOWING ZONES: DUVAL...JIM WELLS...
     KLEBERG...NUECES...SAN PATRICIO...WEBB.

     TROPICAL STORM WIND WARNING FROM 11 AM THIS MORNING TO MIDNIGHT
     CDT TONIGHT FOR THE FOLLOWING ZONES: DUVAL...JIM WELLS.

GM...TROPICAL STORM WARNING FOR THE FOLLOWING ZONES: BAYS AND
     WATERWAYS FROM PORT ARANSAS TO PORT OCONNOR...COASTAL
     WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT 20 NM...
     WATERS PORT ARANSAS TO MATAGORDA SHIP CHANNEL 20 TO 60 NM.

     HURRICANE WARNING FOR THE FOLLOWING ZONES: BAYS AND WATERWAYS
     FROM BAFFIN BAY TO PORT ARANSAS...COASTAL WATERS BAFFIN BAY
     TO PORT ARANSAS OUT 20 NM...WATERS BAFFIN BAY TO PORT
     ARANSAS 20 TO 60 NM.

&&

MB/80...SHORT TERM
TE/81...LONG TERM

Hazardous weather outlook, Jul 23, 6:27 AM CDT, 2 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
627 AM CDT WED JUL 23 2008

GMZ230-235-250-255-270-275-TXZ229>234-239>247-241130-
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-
627 AM CDT WED JUL 23 2008

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

.DAY ONE...TODAY AND TONIGHT

HURRICANE DOLLY WILL PUSH ASHORE NORTH OF PORT ISABEL THIS
AFTERNOON. DOLLY MAY BECOME A CATEGORY TWO HURRICANE BEFORE MAKING
LANDFALL. A HURRICANE WARNING REMAINS IN EFFECT BETWEEN BAFFIN BAY
AND CORPUS CHRISTI AND OUT OVER THE WATERS FOR 60 MILES. A
TROPICAL STORM WARNING REMAINS IN EFFECT BETWEEN CORPUS CHRISTI
AND PORT OCONNOR AND OUT OVER THE WATERS FOR 60 MILES. A TROPICAL
STORM WIND WARNING REMAINS IN EFFECT FOR JIM WELLS AND DUVAL
COUNTIES THROUGH MIDNIGHT. A TORNADO WATCH REMAINS IN EFFECT THIS
MORNING FOR NUECES AND KLEBERG COUNTIES. A FLOOD WATCH HAS BEEN
ISSUED FOR THE SOUTHERN HALF OF SOUTH TEXAS...MAINLY SOUTH OF A
LAREDO TO CORPUS CHRISTI LINE THROUGH THURSDAY. RAINFALL AMOUNTS
BETWEEN 3 TO 6 INCHES WITH ISOLATED AMOUNTS UP TO 8 INCHES WILL BE
POSSIBLE. A STORM SURGE UP TO 3 FEET WILL BE POSSIBLE ALONG
PORTIONS OF PADRE ISLAND. BEACH EROSION FROM HIGH TIDAL LEVELS AND
BATTERING WAVES WILL OCCUR THROUGH THIS EVENING.

STRONG WINDS AND HEAVY RAIN FROM ASSOCIATED SQUALLS AND RAIN BANDS WILL
CONTINUE THROUGH TONIGHT ACROSS MOST OF SOUTH TEXAS AS DOLLY
TRACKS ACROSS DEEP SOUTH TEXAS. VERY HIGH SEAS WILL ALSO LINGER
TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A FLOOD WATCH WILL REMAIN IN EFFECT THROUGH THURSDAY DUE TO
LINGERING TROPICAL MOISTURE ASSOCIATED WITH DOLLY. WINDS AND SEAS
WILL DIMINISH THROUGH FRIDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

MB/TE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 2:52 AM CDT	Flood Watch	CRP	Duval, Jim Wells, Kleberg, Nueces, San Patricio, Webb	49 hr
Jul 23, 7:40 AM CDT	Special Marine Warning	CRP		65 min
Jul 23, 9:39 AM CDT	Tornado Warning	CRP	Nueces, San Patricio	36 min
Jul 23, 9:41 AM CDT	Special Marine Warning	CRP		34 min
Jul 23, 10:01 AM CDT	Areal Flood Advisory	CRP	Aransas, Nueces, San Patricio	59 min
Jul 23, 10:52 AM CDT	Areal Flood Advisory	CRP	Duval	53 min
Jul 23, 11:21 AM CDT	Areal Flood Advisory	CRP	Aransas, Kleberg, Nueces, Refugio, San Patricio	114 min
Jul 23, 12:05 PM CDT	Tornado Warning	CRP	Aransas, Refugio	25 min
Jul 23, 12:08 PM CDT	Special Marine Warning	CRP		37 min
Jul 23, 12:18 PM CDT	Areal Flood Advisory	CRP	Duval, Jim Wells	117 min
Jul 23, 12:22 PM CDT	Tornado Warning	CRP	San Patricio	23 min
Jul 23, 12:45 PM CDT	Tornado Warning	CRP	San Patricio	30 min
Jul 23, 1:00 PM CDT	Areal Flood Advisory	CRP	Aransas, Kleberg, Nueces, San Patricio	2 hr
Jul 23, 2:46 PM CDT	Tornado Warning	CRP	Duval, Jim Wells, Kleberg	29 min
Jul 23, 3:00 PM CDT	Areal Flood Advisory	CRP	Aransas, Duval, Jim Wells, Kleberg, Nueces, San Patricio	2 hr
Jul 23, 6:25 PM CDT	Areal Flood Advisory	CRP	Jim Wells, Kleberg	2 hr

Nearby

Tornado Warnings in Texas, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.