1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 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 Aug 31, 8:49 AM CST, 2 hours 36 minutes earlier.
SOUTHEAST TEXAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 949 AM CDT SUN AUG 31 2003 TROPICAL STORM GRACE DOWNGRADED TO A DEPRESSION. TROPICAL STORM WARNINGS DROPPED. LOOSE CIRCULATION AT BEST...BETTER CIRCULATION DEVELOPING INLAND NEAR ELLINGTON...CLOSE TO THE DEEPER CONVECTION. WINDS ALONG THE COAST DEPICTING WESTERLY WINDS. RAINFALL REMAINS THE BIG ISSUE. HEAVY RAINS OVERNIGHT AND THIS MORNING PRODUCED 2+ EAST OF I-45 A FEW SPOTS IN EASTERN HARRIS COUNTY SHOWING 5-6. THE TROPICAL TAP SQUEEZED NORTH BETWEEN THE UPPER LOW NEAR BROWNSVILLE AND THE UPPER ANTICYCLONE NEAR BATON ROUGE. GPS IPWV SHOWING 2.3-2.5 AT 14Z. THIS TAP SHOULD SLOWLY TRAVERSE THE AREA WESTWARD AS THE HIGH PUSHES WEST THOUGH THE WINDS SHOULD RELAX AS THE REMAINS MOVES INLAND AWAY FROM THE FUEL. WILL PROBABLY SEE THE CONVECTION BREATH OUT THIS AFTERNOON THEN GET A CONTRACTION LATE THIS AFTERNOON/TONIGHT. WILL KEEP THE FLOOD WATCH UP AND REFRESH IT LATER THIS MORNING TO ADDRESS CURRENT TRENDS. TIDES SHOULD BE DROPPING OFF WITH THE WESTERLY COMPONENT TO THE WINDS AND UPCOMING ASTRONOMICAL LOW TIDES. WILL UPDATE QPF GRIDS AND LOWER AFTERNOON TEMPERATURES A FEW DEGREES. 45/37/31/47/DH .HGX...FLOOD WATCH ALL OF SE TX THROUGH TONIGHT.
GMZ330-335-350-355-370-375-TXZ163-164-176>179-195>200-210>214-226- 227-235>238-011100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX 700 AM CDT SUN AUG 31 2003 ...TROPICAL STORM WARNING IN EFFECT FROM HIGH ISLAND TO MATAGORDA BAY... ...FLOOD WATCH IN EFFECT FOR ALL OF SOUTHEAST TEXAS THROUGH TONIGHT... ...LOCALLY HEAVY RAINFALL POSSIBLE THROUGH TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS. .DAY ONE...TODAY AND TONIGHT. A TROPICAL STORM WARNING REMAINS IN EFFECT THIS MORNING FROM HIGH ISLAND TO MATAGORDA BAY. WEAK AND POORLY ORGANIZED TROPICAL STORM GRACE IS EXPECTED TO MOVE INLAND ALONG THE MIDDLE TEXAS COAST LATER TODAY. WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY IS EXPECTED TO PERSIST ACROSS PORTIONS OF SOUTHEAST TEXAS TODAY AND TONIGHT AS INFLOW OFF THE GULF CONTINUES. RAINFALL TOTALS THROUGH MIDNIGHT TONIGHT ARE EXPECTED TO AVERAGE AS HIGH AS 6 TO 8 INCHES WITH ISOLATED 8 TO 12 INCH AMOUNTS POSSIBLE WHERE THE BEST TRAINING DEVELOPS. PLEASE REFER TO HLSHOU AND FFAHGX FOR MORE DETAILS REGARDING THIS ONGOING FLOOD THREAT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. THE THREAT FOR LOCALLY HEAVY RAINFALL IS EXPECTED TO GRADUALLY SHIFT TO THE WEST ON MONDAY AFTERNOON. WESTERN PORTIONS OF SOUTHEAST TEXAS MAY EXPERIENCE THE GREATEST THREAT FOR LOCALLY HEAVY RAINFALL. THESE SAME WESTERN COUNTIES MAY CONTINUE TO BE UNDER THE GUN FOR HEAVY RAINFALL ON TUESDAY AND WEDNESDAY AS THE REMNANTS OF GRACE MOVE SLOWLY IN AND AROUND THE TEXAS HILL COUNTRY. SLIGHTLY DRIER AIR MIGHT FINALLY ENTER THE FORECAST AREA FROM THE NORTH TOWARD THE END OF THE WEEK. .SPOTTER INFORMATION STATEMENT... EMERGENCY MANAGERS AND STORM SPOTTERS SHOULD BE PREPARED FOR ACTIVATION. PREPAREDNESS PLANS SHOULD BE IMPLEMENTED.
The Houston radar (KHGX), 32 km away, was scanning. The volume nearest the first event began at 17:22 UTC.
1 flash flood. Local standard time, as filed.
Portions of Highway 87 on the Bolivar Peninsula impassable.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2003Every state in 2003This day in weather historyWarnings in Texas, August 2003
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: 5378761.