Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 82, NWS Corpus Christi, TX

April 20, 2012Kleberg County, Nueces County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Apr 20, 2012, 5:09 PM CDT for Kleberg County, Nueces County, Texas. It was in force for 51 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 20, 2012, 5:09 PM CDT (22:09 UTC)
Expired: Apr 20, 2012, 6:00 PM CDT
In force: 51 min
Issued by: NWS Corpus Christi, TX
Area: Storm-based polygon

Counties Kleberg County, TX, Nueces County, TX

The radar

The Corpus Christi radar (KCRP), 47 km from the middle of the area, began a volume at 22:12 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

Time	Report	Where	Remark
Apr 20, 5:29 PM CDT	HAIL 1	National Seashore, TX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 20 minutes after it went out.

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
Apr 20, 2:29 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 10.2 hours before the alert went out and 43 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: 633 J/kg
Mixed-layer CIN: -475 J/kg
Mixed-layer LCL: 1213 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

831 
WUUS54 KCRP 202209
SVRCRP
TXC273-355-202300-
/O.NEW.KCRP.SV.W.0082.120420T2209Z-120420T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
509 PM CDT FRI APR 20 2012

THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN KLEBERG COUNTY IN SOUTH CENTRAL TEXAS
  EXTREME SOUTHEASTERN NUECES COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 600 PM CDT

* AT 509 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM RIVIERA BEACH TO 6 MILES
  NORTHEAST OF MALAQUITE BEACH...OR ALONG A LINE EXTENDING FROM 11
  MILES NORTHEAST OF SARITA TO 19 MILES SOUTHEAST OF CORPUS
  CHRISTI...AND MOVING SOUTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MALAQUITE BEACH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT 
FRIDAY EVENING FOR SOUTH TEXAS.

&&

LAT...LON 2726 9774 2743 9763 2758 9731 2755 9731
      2759 9727 2756 9722 2727 9734 2728 9739
      2731 9737 2734 9738 2728 9740 2731 9742
      2727 9750 2729 9756 2736 9750 2728 9761
      2729 9764
TIME...MOT...LOC 2209Z 323DEG 17KT 2730 9764 2751 9726

$$


MB

1 follow-up statement

656 
WWUS54 KCRP 202224
SVSCRP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
524 PM CDT FRI APR 20 2012

TXC355-202232-
/O.CAN.KCRP.SV.W.0082.000000T0000Z-120420T2300Z/
NUECES-
524 PM CDT FRI APR 20 2012

...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHEASTERN NUECES
COUNTY IS CANCELLED...

THE EARLIER SEVERE THUNDERSTORM HAS SINCE MOVED SOUTH OF THE AREA 
AND THEREFORE THE WARNING IS NO LONGER NEEDED.

LAT...LON 2726 9774 2741 9761 2749 9731 2750 9726
      2750 9725 2727 9734 2728 9739 2731 9737
      2734 9738 2728 9740 2731 9742 2727 9750
      2729 9756 2736 9750 2728 9761 2729 9764
TIME...MOT...LOC 2222Z 323DEG 17KT 2725 9760 2746 9722

$$

TXC273-202300-
/O.CON.KCRP.SV.W.0082.000000T0000Z-120420T2300Z/
KLEBERG-
524 PM CDT FRI APR 20 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHEASTERN KLEBERG COUNTY...

AT 521 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM RIVIERA BEACH TO MALAQUITE
BEACH...OR ALONG A LINE EXTENDING FROM 12 MILES EAST OF SARITA TO 23
MILES SOUTHEAST OF CORPUS CHRISTI...MOVING SOUTHEAST AT 20 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PADRE ISLAND NATIONAL SEASHORE...
  MALAQUITE BEACH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

&&

LAT...LON 2726 9774 2741 9761 2749 9731 2750 9726
      2750 9725 2727 9734 2728 9739 2731 9737
      2734 9738 2728 9740 2731 9742 2727 9750
      2729 9756 2736 9750 2728 9761 2729 9764
TIME...MOT...LOC 2222Z 323DEG 17KT 2725 9760 2746 9722

$$


MB

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, 4:17 PM CDT, 52 minutes earlier.

Area forecast discussion, Apr 20, 4:17 PM CDT, 52 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
417 PM CDT FRI APR 20 2012

.SHORT TERM (TONIGHT THROUGH SATURDAY NIGHT)...AN UPPER LEVEL
DISTURBANCE (WATER VAPOR IMAGERY/STREAMLINE DATA) WILL CONTINUE TO
MOVE TOWARD THE EAST OVERNIGHT (NAM/GFS DETERMINISTIC) WITH
INCREASING SUBSIDENCE/DRYING TONIGHT. THE ASSOCIATED SFC FRONT
WILL MOVE OFFSHORE TONIGHT. EXPECT STRONG/SEVERE CONVECTION TO
CONTINUE ALONG/IN ADVANCE OF THE FRONT THIS EVENING. AFTER
FROPA...THE NAM DOES NOT PROG A SIGNIFICANT INCREASE IN MSLP
RISES. THUS... ANTICIPATE NO GREATER THAN MODERATE NORTH WIND
OVERNIGHT. BRIEF GUSTY WIND MAY OCCUR OVER THE ERN CWA DRG THE MID
MORNING HOURS SAT. DRY CONDITIONS EXPECTED SATURDAY. DESPITE THE
FRONT...CAA WILL BE VERY LIMITED SAT AND STRONGER INSOLATION (OWING
TO DRIER AIR) WILL RESULT IN WARM TEMPS AGAIN SAT. THE COMBINATION
OF A ATMOSPHERIC COLUMN (NAM DETERMINISTIC SOUNDING PROFILE/PW
VALUES) AND LGT WIND (PROXIMITY OF WEAK SFC RIDGE AXIS) WILL
RESULT IN SIGNIFICANTLY COOLER CONDITIONS SATURDAY NIGHT.

&&

.FIRE WEATHER...VERY LOW RELATIVE HUMIDITY VALUES EXPECTED
SATURDAY AFTN YET WIND SHOULD REMAIN EVEN BELOW ELEVATED FIRE
DANGER CONDITIONS.

&&

.MARINE...NAM PROGS 30-35KT NORTH AT 925MB AFTER FROPA OVER THE
COASTAL WATERS ALONG WITH LAPSE RATES IN THE 0-1KM NEAR DRY
ADIABATIC. SCA CONDITIONS EXPECTED WITH MARGINAL GALE CONDITIONS
PSBL. YET...CONFIDENT IN SCA WITH WIND GUSTS TO NEAR GALE FORCE.
OVER THE COASTAL WATERS...EXPECT CONDITIONS TO IMPROVE FROM WEST
TO EAST AFTER 18Z SAT (NAM DETERMINISTIC.)

&&

.LONG TERM (SUNDAY THROUGH FRIDAY)...STRONG HIGH PRESSURE RIDGE OVER
THE ROCKIES WILL MAINTAIN DRY NORTHWEST FLOW THROUGH THE BEGINNING
OF THE WEEK.  MONDAY A SECONDARY SURGE OF SURFACE HIGH PRESSURE WILL
MOVE THROUGH SOUTH TEXAS...TURNING WINDS TO A MORE NORTHEAST FLOW.
THIS FLOW WILL MAINTAIN MILD CONDITIONS THROUGH THE FIRST HALF OF
THE PERIOD.  STARTING TUESDAY AS THE SURFACE HIGH SHIFTS TO THE
NORTHERN GULF...WEAK ONSHORE FLOW WILL RETURN. THE CMC AND ECMWF
MAINTAIN RIDGE OVER THE ROCKIES THROUGH THE PERIOD...WHILE THE GFS
TRIES TO MOVE AN UPPER LOW INTO SOUTHERN CALIFORNIA WEDNESDAY AND
INTO THE RIDGE AXIS BY THURSDAY.  FAVORED CMC AND ECMWF FOR THE
FORECAST AS GFS REMAINS AN OUTLIER MOVING THE UPPER LOW INTO THE
UPPER RIDGE.  WILL SHOW A GRADUAL WARMING TREND THROUGH THE WEEK.
BY THE END OF THE PERIOD...HIGHS IN THE MID 90S IN THE BRUSH COUNTY
AND MID TO UPPER 80S ACROSS THE COASTAL PLAINS AND COASTAL BEND.

&&

.PRELIMINARY POINT TEMPS/POPS...
CORPUS CHRISTI    59  79  59  84  60  /  40   0   0   0   0
VICTORIA          55  77  55  81  56  /  40   0   0   0   0
LAREDO            62  86  63  92  64  /  20   0   0   0   0
ALICE             58  81  57  87  57  /  30   0   0   0   0
ROCKPORT          61  77  61  82  62  /  40   0   0   0   0
COTULLA           57  84  58  88  57  /  20   0   0   0   0
KINGSVILLE        59  81  58  85  59  /  40   0   0   0   0
NAVY CORPUS       63  77  64  81  64  /  40   0   0   0   0

&&

.CRP WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
GM...SMALL CRAFT ADVISORY FROM 11 PM THIS EVENING TO 1 PM CDT
     SATURDAY FOR THE FOLLOWING ZONES: COASTAL WATERS FROM
     BAFFIN BAY TO PORT ARANSAS OUT 20 NM...COASTAL WATERS FROM
     PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT 20 NM...WATERS
     FROM BAFFIN BAY TO PORT ARANSAS FROM 20 TO 60 NM...WATERS
     FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL FROM 20 TO 60
     NM.

     SMALL CRAFT ADVISORY FROM 11 PM THIS EVENING TO 7 AM CDT
     SATURDAY FOR THE FOLLOWING ZONES: BAYS AND WATERWAYS FROM
     BAFFIN BAY TO PORT ARANSAS...BAYS AND WATERWAYS FROM PORT
     ARANSAS TO PORT O'CONNOR.

&&

WC/87...SHORT TERM
TT/89...LONG TERM
LK/84...LONG TERM

Hazardous weather outlook, Apr 20, 5:36 AM CDT, 11 hours 33 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
536 AM CDT FRI APR 20 2012

TXZ229>234-239>247-211045-
LA SALLE-MCMULLEN-LIVE OAK-BEE-GOLIAD-VICTORIA-WEBB-DUVAL-
JIM WELLS-KLEBERG-NUECES-SAN PATRICIO-ARANSAS-REFUGIO-CALHOUN-
536 AM CDT FRI APR 20 2012

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

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTH TEXAS
THIS AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE WILL BE AN ELEVATED FIRE WEATHER RISK IN THE COASTAL BEND
REGION ON SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON.

GMZ230-235-250-255-270-275-211045-
BAYS AND WATERWAYS FROM BAFFIN BAY TO PORT ARANSAS-
BAYS AND WATERWAYS FROM PORT ARANSAS TO PORT O'CONNOR-
COASTAL WATERS FROM BAFFIN BAY TO PORT ARANSAS OUT 20 NM-
COASTAL WATERS FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT
20 NM-WATERS FROM BAFFIN BAY TO PORT ARANSAS FROM 20 TO 60 NM-
WATERS FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL FROM 20 TO
60 NM-
536 AM CDT FRI APR 20 2012

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED STRONG TO SEVERE STORMS ARE LIKELY LATE THIS AFTERNOON
AND THIS EVENING ACROSS THE MARINE AREAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SMALL CRAFT ADVISORIES WILL LIKELY BE NEEDED ON SATURDAY AS STRONG
OFFSHORE WINDS DEVELOP. A GALE WATCH MAY BE NECESSARY FOR OPEN
WATER AREAS.

PZ/TB

In the hours before

Special weather statement, Apr 20, 4:32 PM CDT, 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
432 PM CDT FRI APR 20 2012

TXZ231-232-202230-
BEE-LIVE OAK-
432 PM CDT FRI APR 20 2012

...A STRONG THUNDERSTORM WAS AFFECTING BEE AND LIVE OAK COUNTIES...

AT 430 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES WEST OF SKIDMORE...MOVING EAST AT 35 MPH.

DIME SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS
STORM.

CB

Special weather statement, Apr 20, 4:34 PM CDT, 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
434 PM CDT FRI APR 20 2012

TXZ231-241-202215-
JIM WELLS-LIVE OAK-
434 PM CDT FRI APR 20 2012

...A STRONG THUNDERSTORM WAS AFFECTING NORTHERN JIM WELLS AND
SOUTHERN LIVE OAK COUNTIES...

AT 430 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR ANNAROSE...OR 17 MILES SOUTH OF GEORGE
WEST...MOVING EAST AT 35 MPH.

DIME SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS
STORM.

CB

Special weather statement, Apr 20, 4:44 PM CDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
444 PM CDT FRI APR 20 2012

TXZ245>247-202230-
ARANSAS-CALHOUN-REFUGIO-
444 PM CDT FRI APR 20 2012

...A STRONG THUNDERSTORM WAS AFFECTING ARANSAS...CALHOUN AND REFUGIO
COUNTIES...

AT 439 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 10 MILES EAST OF HOLIDAY BEACH...OR 15 MILES
NORTHEAST OF ROCKPORT...MOVING EAST AT 35 MPH.

NICKEL SIZE HAIL...AND WINDS AROUND 40 MPH ARE EXPECTED WITH THIS
STORM.

CB

Local storm report, Apr 20, 4:51 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
451 PM CDT FRI APR 20 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0442 PM     HAIL             NNW RICARDO             27.42N 97.85W
04/20/2012  E1.00 INCH       KLEBERG            TX   EMERGENCY MNGR

            EM OFFICE REPORTED QUARTER SIZE HAIL IN RICARDO AREA.

&&

HART

Local storm report, Apr 20, 5:01 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
501 PM CDT FRI APR 20 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0457 PM     HAIL             6 ESE CC NAS            27.66N 97.18W
04/20/2012  E0.50 INCH       NUECES             TX   PARK/FOREST SRVC

            REPORTED AT MUSTANG ISLAND STATE PARK.

&&

HART

Local storm report, Apr 20, 5:05 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
505 PM CDT FRI APR 20 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0503 PM     HAIL             6 ESE CC NAS            27.66N 97.18W
04/20/2012  E1.00 INCH       NUECES             TX   PARK/FOREST SRVC

            QUARTER SIZE HAIL NOW FALLING AT MUSTANG ISLAND STATE
            PARK

&&

HART

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 20, 2:01 PM CDT	Severe Thunderstorm Warning	CRP	Victoria	59 min
Apr 20, 3:01 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Kleberg	44 min
Apr 20, 3:04 PM CDT	Severe Thunderstorm Warning	CRP	Live Oak	41 min
Apr 20, 3:18 PM CDT	Severe Thunderstorm Warning	CRP	Aransas, Refugio, San Patricio	42 min
Apr 20, 3:24 PM CDT	Severe Thunderstorm Warning	CRP	Jim Wells, Kleberg, Nueces, San Patricio	66 min
Apr 20, 3:34 PM CDT	Small Craft Advisory	CRP		29 hr
Apr 20, 3:35 PM CDT	Tornado Warning	CRP	Jim Wells, Kleberg, Nueces	40 min
Apr 20, 3:42 PM CDT	Severe Thunderstorm Warning	CRP	McMullen	48 min
Apr 20, 3:44 PM CDT	Severe Thunderstorm Warning	CRP	Duval, Jim Wells, Kleberg	61 min
Apr 20, 3:49 PM CDT	Severe Thunderstorm Warning	CRP	Bee, Live Oak	41 min
Apr 20, 3:50 PM CDT	Severe Thunderstorm Warning	CRP	Aransas, Nueces, Refugio, San Patricio	55 min
Apr 20, 3:52 PM CDT	Severe Thunderstorm Warning	CRP	Calhoun, Refugio	38 min
Apr 20, 4:00 PM CDT	Special Marine Warning	CRP		2 hr
Apr 20, 4:08 PM CDT	Severe Thunderstorm Warning	CRP	Live Oak, McMullen	37 min
Apr 20, 4:17 PM CDT	Tornado Warning	CRP	Nueces	43 min
Apr 20, 4:21 PM CDT	Severe Thunderstorm Warning	CRP	Calhoun, Refugio	39 min
Apr 20, 4:46 PM CDT	Severe Thunderstorm Warning	CRP	Kleberg	44 min
Apr 20, 4:48 PM CDT	Severe Thunderstorm Warning	CRP	Kleberg, Nueces	42 min
Apr 20, 5:14 PM CDT	Special Marine Warning	CRP		2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2012 Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.