The atmosphere became extremely unstable across South Texas during the afternoon of May 10th, ahead of a slow moving cold front. Temperatures ahead of the front climbed into the low 100s, and RUC analysis indicated MLCAPES exceeding 5000 J/KG across the Middle Texas Coastal Plains. Rapid thunderstorm development began around 21Z, as the cap eroded, cold front moved into the region, and sea-breeze boundary began to push inland.

Hail in SAN PATRICIO, TEXAS
From 10-MAY-06 17:05:00 to 10-MAY-06 17:05:00 (CST)
Location: ODEM
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Hail in NUECES, TEXAS
From 10-MAY-06 17:22:00 to 10-MAY-06 17:22:00 (CST)
Location: ROBSTOWN
Magnitude: 1.75 
Reported by: GENERAL PUBLIC

Reported in Woodriver subdivision in Calallen.

Hail in NUECES, TEXAS
From 10-MAY-06 15:35:00 to 10-MAY-06 15:35:00 (CST)
Location: PETRONILA
Magnitude: 2.75 
Reported by: LAW ENFORCEMENT

Baseball-sized hail reported at corner of FM 665 and CR 67.  Windshield on car was broken.

Hail in NUECES, TEXAS
From 10-MAY-06 15:30:00 to 10-MAY-06 15:40:00 (CST)
Location: BISHOP
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Tornado in VICTORIA, TEXAS
From 10-MAY-06 15:35:00 to 10-MAY-06 15:38:00 (CST)
Location: VICTORIA
Tornado F-scale: F0
Reported by: NEWSPAPER

Tornado observed by newspaper reporter between Guadalupe and Wood Hi, over open rural country.

Hail in REFUGIO, TEXAS
From 10-MAY-06 18:30:00 to 10-MAY-06 18:30:00 (CST)
Location: BAYSIDE
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Heat in BEE, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in LA SALLE, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Very hot and humid conditions developed across much of South Texas during the afternoon of May 10th, ahead of a slow moving cold front.  High temperatures in many locations away from the immediate coast ranged from 100 to 112 degrees.  Heat indices reached a staggering 115 to 125 degrees in some locations.  The high temperature at the Corpus Christi International Airport reached 103 degrees, shattering the old record for this date.  The temperature at the Victoria Regional Airport climbed to 97 degrees, also setting a record for this date.

Heat in LIVE OAK, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in MCMULLEN, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in JIM WELLS, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in GOLIAD, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Hail in KLEBERG, TEXAS
From 10-MAY-06 18:45:00 to 10-MAY-06 18:45:00 (CST)
Location: RICARDO
Magnitude: 0.75 
Reported by: AMATEUR RADIO

Reported near CR 1090 and CR 2160.

Flash Flood in KLEBERG, TEXAS
From 10-MAY-06 19:45:00 to 10-MAY-06 20:45:00 (CST)
Location: RIVIERA
Reported by: LAW ENFORCEMENT

CR 771 impassable with water over the road, between Riviera and Riviera Beach.

Hail in JIM WELLS, TEXAS
From 10-MAY-06 16:30:00 to 10-MAY-06 16:30:00 (CST)
Location: PREMONT
Magnitude: 1.75 
Reported by: LAW ENFORCEMENT

Hail in JIM WELLS, TEXAS
From 10-MAY-06 15:45:00 to 10-MAY-06 15:45:00 (CST)
Location: BEN BOLT
Magnitude: 1.00 
Reported by: LAW ENFORCEMENT

Hail in KLEBERG, TEXAS
From 10-MAY-06 15:46:00 to 10-MAY-06 15:46:00 (CST)
Location: KINGSVILLE
Magnitude: 0.88 
Reported by: EMERGENCY MANAGER

Hail in VICTORIA, TEXAS
From 10-MAY-06 15:50:00 to 10-MAY-06 15:50:00 (CST)
Location: VICTORIA
Magnitude: 0.75 
Reported by: LAW ENFORCEMENT

Reported at Hanselman and U.S. 59.

Hail in KLEBERG, TEXAS
From 10-MAY-06 15:54:00 to 10-MAY-06 16:05:00 (CST)
Location: KINGSVILLE
Magnitude: 1.75 
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in KLEBERG, TEXAS
From 10-MAY-06 18:10:00 to 10-MAY-06 18:10:00 (CST)
Location: RIVIERA
Magnitude: 55 EG
Reported by: LAW ENFORCEMENT

Several trees and power poles blown down near Sea Wind RV Park, on CR 1717.

Heat in DUVAL, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in NUECES, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in REFUGIO, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in SAN PATRICIO, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in VICTORIA, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Heat in WEBB, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Hail in KLEBERG, TEXAS
From 10-MAY-06 15:54:00 to 10-MAY-06 15:54:00 (CST)
Location: KINGSVILLE
Magnitude: 2.50 
Property damage: 5K
Reported by: NEWSPAPER

Tennis ball-sized hail damaged all mobile home in the Country Estates Mobile Ranch on F.M. 1717.  Over 100 windows were broken by the hail.

Heat in KLEBERG, TEXAS
From 10-MAY-06 12:00:00 to 10-MAY-06 17:00:00 (CST)
Reported by: AWOS,ASOS,MESONET,ETC

Dust Storm in DUVAL, TEXAS
From 10-MAY-06 16:29:00 to 10-MAY-06 16:29:00 (CST)
Reported by: LAW ENFORCEMENT

Strong winds from nearby thunderstorms lifted dust and dirt of the ground in Freer, reducing visbilities to two car lengths on U.S. 59.

Hail in KLEBERG, TEXAS
From 10-MAY-06 16:45:00 to 10-MAY-06 16:45:00 (CST)
Location: RICARDO
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Reported near FM 772.

Hail in REFUGIO, TEXAS
From 10-MAY-06 16:55:00 to 10-MAY-06 17:00:00 (CST)
Location: REFUGIO
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Hail in KLEBERG, TEXAS
From 10-MAY-06 17:30:00 to 10-MAY-06 17:30:00 (CST)
Location: RICARDO
Magnitude: 0.75 
Reported by: AMATEUR RADIO

Hail in SAN PATRICIO, TEXAS
From 10-MAY-06 17:30:00 to 10-MAY-06 17:30:00 (CST)
Location: SAN PATRICIO
Magnitude: 1.75 
Reported by: LAW ENFORCEMENT

Hail in KLEBERG, TEXAS
From 10-MAY-06 16:15:00 to 10-MAY-06 16:20:00 (CST)
Location: RICARDO
Magnitude: 1.25 
Reported by: AMATEUR RADIO

Hail in NUECES, TEXAS
From 10-MAY-06 16:35:00 to 10-MAY-06 16:40:00 (CST)
Location: ROBSTOWN
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Penny to quarter sized hail reported in Callalan near FM 624 and FM 1889, as well as near the intersection of I-37 and U.S. 77.

Hail in VICTORIA, TEXAS
From 10-MAY-06 16:36:00 to 10-MAY-06 16:36:00 (CST)
Location: BLOOMINGTON
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in SAN PATRICIO, TEXAS
From 10-MAY-06 16:44:00 to 10-MAY-06 16:44:00 (CST)
Location: ODEM
Magnitude: 55 EG
Reported by: LAW ENFORCEMENT

Several power poles and large trees downed by thunderstorm winds.

Hail in SAN PATRICIO, TEXAS
From 10-MAY-06 16:55:00 to 10-MAY-06 16:55:00 (CST)
Location: SINTON
Magnitude: 2.75 
Reported by: BROADCAST MEDIA