Drier air and offshore flow spread across South Texas into the morning of the 18th pushing all the showers and thunderstorms into the West Gulf of Mexico. However, a weak sea breeze developed on the afternoon of the 18th, leading to low level speed convergence on the immediate coast.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS CRP wrote it up.
Drier air and offshore flow spread across South Texas into the morning of the 18th pushing all the showers and thunderstorms into the West Gulf of Mexico. However, a weak sea breeze developed on the afternoon of the 18th, leading to low level speed convergence on the immediate coast. Moisture and instability was still sufficient and some showers developed on the coast and funnel clouds observed near Port Lavaca.
The local office's own words before the first event, 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 the first event at Apr 18, 5:30 PM CST, 34 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 630 PM CDT SUN APR 18 2010 .DISCUSSION...PLEASE SEE THE AVIATION DISCUSSION BELOW FOR MORE DETAILS. && .AVIATION...VFR CONDITIONS WL PREVAIL THROUGH THIS EVENING ACROSS MOST OF SOUTH TX. HOWEVER...THE DRYING CONDITIONS MAINLY ABV THE SURFACE ALONG WITH WET SOILS SHOULD ALLOW FOG TO DEVELOP TNT...MAINLY OVER THE COASTAL BEND. VSBYS WL GET DOWN AS LOW AS IFR LVLS DURING THE EARLY MORNING HOURS BETWEEN 07Z AND 12Z. SOME IFR/MVFR LOW STRATUS WL ALSO DEVELOP TNT DUE TO THE STILL MOIST NEAR-SFC LAYER. THE STRATUS AND FOG WL QUICKLY DISSIPATE BY NOON MONDAY AS NORTHERLY FLOW RE-INTENSIFIES AND AS EVEN DRIER AIR PUSHES INTO SOUTH TX. && .PRELIMINARY POINT TEMPS/POPS... CORPUS CHRISTI 60 76 59 73 58 / 10 10 20 40 10 VICTORIA 57 76 57 75 54 / 20 10 10 30 10 LAREDO 61 82 65 76 59 / 10 0 40 50 10 ALICE 58 77 58 73 56 / 10 10 20 50 10 ROCKPORT 62 75 61 71 60 / 20 10 10 40 10 COTULLA 58 78 57 74 54 / 10 0 40 40 10 KINGSVILLE 59 79 61 76 57 / 10 10 20 50 10 NAVY CORPUS 64 73 60 71 61 / 10 10 10 40 10 && .CRP WATCHES/WARNINGS/ADVISORIES... TX...NONE. GM...NONE. && MB
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 509 AM CDT SUN APR 18 2010 GMZ230-235-250-255-270-275-TXZ229>234-239>247-191100- 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-LA SALLE-MCMULLEN-LIVE OAK-BEE-GOLIAD-VICTORIA-WEBB-DUVAL- JIM WELLS-KLEBERG-NUECES-SAN PATRICIO-ARANSAS-REFUGIO-CALHOUN- 509 AM CDT SUN APR 18 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS AND THE MIDDLE TEXAS COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS WITH LOCALLY HEAVY RAINFALL WILL BE POSSIBLE TODAY ACROSS THE BRUSH COUNTRY...COASTAL BEND AND VICTORIA CROSSROADS. THE BEST CHANCE WILL BE ALONG AND NORTHEAST OF INTERSTATE 37. BETWEEN 1/4 AND 1/2 OF AN INCH OF RAINFALL WILL BE POSSIBLE NORTHEAST OF INTERSTATE 37...WITH LOCALLY HIGHER AMOUNTS OF 1 TO 2 INCHES AND ISOLATED FLOODING POSSIBLE. GENERALLY LESS THAN 1/4 OF AN INCH IS EXPECTED SOUTHWEST OF INTERSTATE 37. IN ADDITION...A FEW OF THE STRONG STORMS MAY PRODUCE WIND GUSTS UP TO 40 MPH AND SMALL HAIL. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THERE WILL BE A CHANCE FOR SHOWERS AND THUNDERSTORMS MAINLY FROM THURSDAY THROUGH FRIDAY. NO ORGANIZED SEVERE WEATHER IS EXPECTED AT THIS TIME...ALTHOUGH A FEW STRONG STORMS ARE POSSIBLE MAINLY DURING THE AFTERNOON AND EVENING HOURS OF THURSDAY AND FRIDAY. ALSO... RAINFALL AMOUNTS ARE NOT EXPECTED TO PRODUCE SIGNIFICANT FLOODING AT THIS TIME...AS ATMOSPHERIC MOISTURE WILL BE LOWER AND UPPER LEVEL FLOW WILL MOVE THE STORMS SUFFICIENTLY TO PRECLUDE EXCESSIVE RAINFALL THAT NORMALLY RESULT FROM NEARLY STATIONARY STORMS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. JR/GW
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
111 PM CDT SUN APR 18 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 PM FLASH FLOOD 2 SE ALICE 27.73N 98.04W
04/17/2010 JIM WELLS TX NWS EMPLOYEE
FARM TO MARKET ROAD 1930 FLOODED IN 3 PLACES...UP TO ONE
FOOT OF WATER OVER THE ROAD.
&&
RGASSSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 650 PM CDT SUN APR 18 2010 TXZ247-190045- CALHOUN- 650 PM CDT SUN APR 18 2010 ...A FUNNEL CLOUD WAS SPOTTED OVER CALHOUN COUNTY... AT 649 PM CDT...A TRAINED WEATHER SPOTTER REPORTED A FUNNEL CLOUD OVER CALHOUN COUNTY BETWEEN GREEN LAKE AND PORT LAVACA. ADDITIONAL FUNNEL CLOUDS WILL BE POSSIBLE THROUGH 800 PM CDT. IF YOU LIVE IN THE PATH OF THIS STORM...YOU SHOULD BE PREPARED TO SEEK SHELTER IN THE UNLIKELY EVENT THE FUNNEL CLOUD REACHES THE GROUND.
The Corpus Christi radar (KCRP), 115 km away, was scanning. The volume nearest the first event began at 00:05 UTC.
1 funnel cloud. Local standard time, as filed.
Several reports of multiple funnel clouds were received west of Port Lavaca, near the Green Lake area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2010Every state in 2010This day in weather historyWarnings in Texas, April 2010
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 225837.