Afternoon thunderstorms caused damaging lightning strikes in the Houston and Pasadena areas.
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 HGX wrote it up.
Afternoon thunderstorms caused damaging lightning strikes in the Houston and Pasadena areas.
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 Jul 19, 2:37 PM CST, 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 337 PM CDT THU JUL 19 2012 .DISCUSSION... THE MAIN WEATHER DRIVER FOR OUR REGION WILL CONTINUE TO BE AN UPPER RIDGE...ITS NORTHWEST-TO-SOUTHEAST POSITIONED AXIS EXTENDING DOWN FROM CENTRAL COLORADO INTO NORTHERN TEXAS. THUS...SUBSIDENCE WILL RULE OUT THROUGH THE WEEKEND WITH CONVECTION BEING DIURNALLY- DRIVEN DURING THE 15-22Z TIME FRAME. THE GREATEST MOISTURE IS CURRENTLY OVER THE SOUTHWESTERN/COASTAL FORECAST AREA (AT AROUND 2 INCH PWS) AND THIS IS WHERE TODAY'S PRECIPITATION HAS BEEN FOCUSED. A FORECASTED TRANSITION TO SLIGHTLY HIGHER OVERALL (REGIONAL) MOISTURE AS 7H STEERING FLOW WILL ADVECT IN A GT 1.6 INCH PWAT AIR MASS FROM LOUISIANA TOMORROW. SOUTHERN 2/3RDS EARLY DAY SLIGHT CHANCE POPS TO INCREASE TO AROUND 30 PROBS ALONG AND SOUTH OF I-10 ONCE AGAIN TOMORROW...UPPER RIDGING EXPANDING DOWN INTO SOUTHEASTERN TX SATURDAY WILL DECREASE SATURDAY INTO SUNDAY POPS TO UNDER 20. RELATIVELY SPEAKING THIS WEEKEND WILL WARM UP...ESPECIALLY WITHIN THE INTERIOR...WHEREAS CURRENT 19C 85H TEMPS ARE MODELED (ECMWF) TO INCREASE BY ANOTHER COUPLE OF DEGREES SATURDAY. WHEN TAKING SATURDAY'S 20Z KCLL LCL PARCEL DOWN DRY-ADIABATICALLY...SURFACE TEMPERATURES TRANSLATE TO AROUND 99F. CONSIDERING THAT THESE SAME PROFILES INDICATE NEAR 2 INCH PWATS AND MID-UPPER LEVEL SATURATION... CONFIDENCE LEANS TO MANY INTERIOR LOCATIONS BRIEFLY REACHING THE UPPER 90S (POSSIBLY BY 19Z) AND THEN REGULATING IN THE MIDDLE 90S GOING INTO SUNSET. ALL OF THIS IS SOMEWHAT TRIVIAL SINCE WE ARE HEADING INTO LATE JULY...BUT THICKER WEEKEND CLOUD COVER COULD BE TRENDING MAX TEMPS CLOSER TO 95F THAN 100F. WHAT WOULD NOT BE TRIVIAL IS HEAT INDICES...CURRENT FORECAST HAS INTERIOR HEAT INDICES IN THE 105 TO NEAR 110F RANGE SATURDAY. INCREASING EASTERN MOISTURE WILL MODIFY A VERY HEATED AND WARM PRIOR DAY AIR MASS SUNDAY...THUS WEEKEND HEAT ADVISORIES ARE NOT ANTICIPATED AT THIS TIME. PRECIPITATION CHANCES INCREASE EARLY NEXT WEEK AS N-NE PVA INCREASES WITHIN A MOISTENED AND VERY WARM (MARGINALLY UNSTABLE) ENVIRONMENT. AS OF NOW...NOT CONFIDENT ENOUGH TO GO ANY HIGHER THAN SLIGHT CHANCE MONDAY INTO TUESDAY. LATEST NWP SOLUTIONS ARE DRY (EURO) TO 10-30 PERCENT MESO-DRIVEN COVERAGE ACROSS SOUTHERN FA (GFS). 31 && .AVIATION... NEXT 24 HOURS SHOULD REMAIN PREDOMINANTLY VFR AT ALL TAF SITES. CXO AND LBX MAY EXPERIENCE MVFR CIG/VSBY DURING PREDAWN HOURS ON THURSDAY. OTHERWISE...THE EFFECT OF THE HIGH PRESSURE RIDGE CENTERED OVER THE GULF AND THE UPPER LEVEL RIDGE OVER THE CENTRAL US SHOULD CONTINUE TO REDUCE THE COVERAGE AND INTENSITY OF SHOWER AND THUNDERSTORM ACTIVITY. 44 && .MARINE... VERY LITTLE CHANGE IS EXPECTED ACROSS THE MARINE AREA FOR THE NEXT FEW DAYS. A LIGHT ONSHORE FLOW WILL PERSIST THROUGH THE WEEKEND AS HIGH PRESSURE CONTINUES TO BUILDS OVER THE GULF. ISOLATED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER THE GULF COASTAL WATERS THROUGH THE END OF THE WEEK. TIDE LEVELS WILL REMAIN NEAR NORMAL. 44 .PRELIMINARY POINT TEMPS/POPS... COLLEGE STATION (CLL) 75 96 77 98 76 / 10 20 10 10 10 HOUSTON (IAH) 75 95 77 96 76 / 20 30 20 20 20 GALVESTON (GLS) 81 90 81 91 81 / 20 30 20 20 10 && .HGX WATCHES/WARNINGS/ADVISORIES... TX...NONE. GM...NONE. && DISCUSSION...31/44
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 348 PM CDT THU JUL 19 2012 TXZ163-164-176>179-195>200-210>214-226-227-235>238-202100- AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND- GALVESTON-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA- MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-WASHINGTON- WHARTON- 348 PM CDT THU JUL 19 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... HEAT INDICES MAY EXCEED 105F SATURDAY AFTERNOON. IF OUTDOORS THIS WEEKEND....TAKE THE PROPER PRECAUTIONS TO DEAL WITH THE HEAT. COMPLETE HYDRATION...SHADE AND SUN BLOCK WILL BE YOUR MAIN ALLIES. SPOTTER ACTIVATION WILL NOT BE NEEDED.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 411 PM CDT THU JUL 19 2012 TXZ213-192200- HARRIS TX- 411 PM CDT THU JUL 19 2012 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN HARRIS COUNTY UNTIL 500 PM CDT... AT 406 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR GALENA PARK. THIS STORM WAS DEVELOPING AND NEARLY STATIONARY AT THIS TIME. HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THIS STORM. VERY HEAVY RAINFALL MAY FLOOD SECONDARY STREETS AND FEEDER ROADS AS WELL. LOCATIONS IMPACTED INCLUDE... HOUSTON...PASADENA...CHANNELVIEW...DEER PARK...CLOVERLEAF...SOUTH HOUSTON...GALENA PARK...JACINTO CITY...HIGHLANDS AND SHELDON. PRECAUTIONARY/PREPAREDNESS ACTIONS... TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 2964 9506 2965 9541 2987 9541 2986 9504 TIME...MOT...LOC 2106Z 128DEG 2KT 2973 9519
The Houston radar (KHGX), 22 km away, was scanning. The volume nearest the first event began at 21:21 UTC.
2 lightning. Local standard time, as filed.
A lightning strike struck a tree and part of the tree fell onto a carport and basketball goal causing damage.
A television station reports a man was injured by a lightning strike at the Port of Houston.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2012Every state in 2012This day in weather historyWarnings in Texas, July 2012
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: 404425, 404427.