Severe thunderstorms developed during the afternoon and evening along an outflow boundary generated from activity off to our east.
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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 HGX wrote it up.
Severe thunderstorms developed during the afternoon and evening along an outflow boundary generated from activity off to our east.
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 Houston/Galveston, TX wrote its last area forecast discussion before the first event at May 29, 2:23 PM CST, 1 hour 27 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 323 PM CDT SAT MAY 29 2010 .DISCUSSION... SCATTERED MID-DAY CONVECTION FIRING UP ALONG THE SEA BREEZE SPITTING OUT OUTFLOWS...WITH THE MAIN ACTIVITY FROM THE CITY SOUTHWESTWARD TOWARDS MATAGORDA BAY. NOT A WHOLE LOT OF MOISTURE TO WORK WITH BUT ENOUGH WITHIN THIS CONDITIONALLY UNSTABLE ENVIRONMENT TO EVOLVE HIGH-BASED STRATO-CU INTO MATURE ORDINARY CELLS. OUTFLOWS FROM THIS ACTION MAY PROVIDE THE PATH FOR NEAR FUTURE ISOLATED THUNDER...WILL BE MONITORING FOR THESE AREAS FOR RETURNING CONVECTION TOMORROW AFTERNOON. THE MAIN THREAT WITH TODAY'S STORMS WILL BE GUSTY DOWNDRAFT WINDS AS THEY BLOW THEMSELVES OUT AND HAIL TO NEAR PENNY-SIZE. MS-AL LOW BECOMING A OPEN WAVE TROUGH BY LATE TOMORROW WITH THIS FEATURE INCHING CLOSE ENOUGH TO EASTERN TX TO MENTION THE CHANCE FOR EITHER WESTERN LA STORM OUTFLOW OR ENOUGH HEIGHT WEAKNESS WITHIN THE HEAT-OF-DAY TIME FRAME TO SET-OFF EASTERN FA SHOWERS/STORMS. FLAT RIDGING THROUGH MID-WEEK WILL PROVIDE UNEVENTFUL WEATHER ASIDE FROM MID-LATE PM BREEZE ISOLATED CELLS. PATTERN EVOLVES INTO A MORE INTERESTING ONE WEDNESDAY AND THURSDAY AS WEAK WESTERN TROFFING ADVANCES INTO THE LONE STAR. SOUTHERN VORTS MOVING OVER WITHIN A MORE MOISTENED ENVIRONMENT WILL INITIATE MORE WIDESPREAD RAIN...SCATTERED SHOWERS/THUNDER FROM AS EARLY AS WEDNESDAY MORNING THROUGH THURSDAY EVENING. DUE TO CONSISTENT RUN-TO-RUN MESSAGE OF RAIN...HAVE GONE AHEAD AND INCREASED POPS UP TO HIGH CHANCE OVER THE WESTERN CWA. ECMWF THE AGGRESSOR FOR A CHANGE...SLOW SAGGY TROF TO MOVE OUT OF EASTERN TEXAS EARLY FRIDAY. HOPES ARE THAT MOST OF THE REGION RECEIVES AN AVERAGE 1/2 TO INCH ACCUMULATION OVER THESE TWO DAYS TO BRING RELIEF TO OUR ABNORMALLY DRY LATE SPRING. 31 && .MARINE... ONSHORE WINDS TO PERSIST THROUGH THE WEEK. NO CAUTION OR ADVISORIES ARE EXPECTED. 40 && .AVATION... VFR EXPECTED THROUGH THE PERIOD. THE EXCEPTIONS WILL BE PATCHY FOG AT KCXO AND KBLX AROUND SUNRISE SUNDAY MORNING. OTHERWISE...THE SEA BREEZE MAY GENERATE ISOLATED SHOWERS OR THUNDERSTORMS LATE THIS AFTERNOON OR EARLY THIS EVENING. 40 && .PRELIMINARY POINT TEMPS/POPS... COLLEGE STATION (CLL) 71 96 70 94 69 / 10 20 20 20 20 HOUSTON (IAH) 72 94 71 93 71 / 20 20 20 20 20 GALVESTON (GLS) 76 88 75 85 75 / 20 20 10 20 20 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...NONE. GM...NONE. && DISCUSSION...31/40
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 354 PM CDT SAT MAY 29 2010 TXZ178-197-199-200-210>214-226-227-235>238-300900- AUSTIN-BRAZORIA-CHAMBERS-COLORADO-FORT BEND-GALVESTON-HARRIS- JACKSON-LIBERTY-MATAGORDA-MONTGOMERY-SAN JACINTO-WALLER- WASHINGTON-WHARTON- 354 PM CDT SAT MAY 29 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT AN EASTERN UPPER LEVEL LOW ROTATING OVER MISSISSIPPI AND ALABAMA IN TANDEM WITH THE LOCALIZED EFFECTS OF THE SEA BREEZE WILL PRODUCE A FEW STRONG THUNDERSTORMS LATE THIS AFTERNOON AND EVENING. THE PRIMARY THREAT WOULD BE STRONG GUSTY WINDS TO NEAR 40 MPH AND NEAR ONE INCH DIAMETER HAIL MAINLY SOUTH OF THE INTERSTATE 10 CORRIDOR AND ALONG INTERSTATE 45. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
320 PM CDT SAT MAY 29 2010
TXZ227-237-292115-
BRAZORIA-FORT BEND-
320 PM CDT SAT MAY 29 2010
...SIGNIFICANT WEATHER ADVISORY...
AT 314 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ACROSS AN AREA ALONG A LINE EXTENDING FROM 15
MILES NORTH OF WEST COLUMBIA TO 16 MILES NORTHEAST OF ANGLETON.
THESE STORMS WERE GENERALLY MOVING SOUTH AT 10 MPH.
WINDS GREATER THAN 40 MPH...BRIEF MODERATE DOWNPOURS...AND SMALL
HAIL...ARE POSSIBLE WITH THESE STORMS.
LOCATIONS IN THE PATH OF THESE STORMS INCLUDE...ROSHARON...CHOCOLATE
BAYOU...WEST COLUMBIA...LIVERPOOL...BONNEY...BAILEY'S PRAIRIE...AND
ANGLETON.
GUSTY WINDS MAY CAUSE UNSECURED SMALL OBJECTS SUCH AS TRASH CANS TO
BLOW AROUND. SEEK SHELTER IN A STURDY STRUCTURE OR NON-CONVERTIBLE
AUTOMOBILE UNTIL THESE STORMS HAVE PASSED.
LAT...LON 2919 9512 2919 9514 2914 9515 2910 9514
2905 9515 2906 9517 2908 9517 2906 9520
2916 9576 2946 9570 2937 9516 2928 9510
TIME...MOT...LOC 2019Z 010DEG 7KT 2935 9561 2928 9521The Houston radar (KHGX), 68 km away, was scanning. The volume nearest the first event began at 21:48 UTC.
1 thunderstorm wind. Local standard time, as filed.
Severe thunderstorm wind gusts downed trees and power lines from Brazoria southwestward to around 1 mile west of the San Bernard River.
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, May 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: 234067.