A nighttime core rain event occurred in the Laredo vicinity during the early morning hours of July 27th. A weak upper level low pressure area moved across the western Brush Country during the night and interacted with deep tropical moisture over the area.
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.
A nighttime core rain event occurred in the Laredo vicinity during the early morning hours of July 27th. A weak upper level low pressure area moved across the western Brush Country during the night and interacted with deep tropical moisture over the area. Thunderstorms developed over the eastern part of Webb County and slowly moved toward Laredo a few hours after midnight. Very heavy rainfall of 5 to 8 inches occurred within a 3 hour time period over the northeast portion of Laredo. This produced flooding in a residential area on the northeast side of Laredo. Several high water rescues were performed with motorists stranded from Interstate 35 to Loop 20 on the northeast side of Laredo. One person was evacuated from her home due to rising water. Around 100 homes received damage from flood waters in northeast Laredo.
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 Jul 27, 3:10 AM CST, 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 410 AM CDT FRI JUL 27 2012 .SHORT TERM...SMALL UPPER LEVEL LOW SEEN ON WATER VAPOR THIS MORNING NEAR THE RIO GRANDE. BURST OF ELEVATED CONVECTION HAS DEVELOPED OVERNIGHT NEAR THE LOW AND IS DRIFTING SLOWLY NORTHWEST THROUGH WEBB COUNTY. THREAT FOR SMALL HAIL AND MINOR FLOODING THROUGH THE EARLY MORNING NEAR AND NORTH OF LAREDO. 4KM WRF INDICATES CONVECTION GRADUALLY SHIFTING NORTHWEST THROUGH THE MORNING HOURS. WILL KEEP CHANCE/SCATTERED POPS IN THE FORECAST FOR THE MORNING ACROSS THE FAR WESTERN CWA. THE REMAINDER OF THE CWA SHOULD REMAIN DRY AND WARM TODAY. HEAT INDEX VALUES WILL BECOME AN ISSUE OVER PORTIONS OF THE SOUTHERN COASTAL BEND THIS AFTERNOON... BACK INTO THE 105 TO 109 RANGE. WHAT IS LEFT OF THE UPPER LEVEL LOW DRIFTS AWAY FROM THE CWA TONIGHT AND WEAKENS...WITH RIDGING NUDGING INTO THE REGION FROM THE NORTH. SLIGHTLY WARMER TOMORROW WITH A LARGER AREA IN THE 105 TO 109 RANGE FOR HEAT INDICES. && .LONG TERM (SATURDAY NIGHT THROUGH THURSDAY)...AN UPPER LEVEL SHORT WAVE IS PROGD TO ROUND THE BASE OF THE UPPER HIGH AND APPROACH S TX SUN. THERE REMAINS SOME UNCERTAINTY AS TO WHETHER SUFFICIENT MOISTURE WILL BE IN PLACE ON SUNDAY FOR PRECIP. ONLY THE GFS SEEMS TO SHOW ENOUGH MOISTURE WITH THE OTHER MODELS A TAD DRIER. FOR NOW...KEPT THE 20 POP ACROSS THE E CWA FOR SUN. THE UPPER SHORT WAVE IS PROGD TO BE OVER MEX BY MON WITH HIGH PRESSURE BUILDING ACROSS THE AREA IN ITS WAKE. HIGH PRESSURE ALOFT WILL REMAIN IN CONTROL THROUGH THE WEEK WITH ABV NORMAL MX TEMPS AND A WEAK TO MOD ONSHORE FLOW. MODELS SHOW LIMITED LOW LEVEL MOISTURE THRU THE PERIOD...THEREFORE KEPT SILENT 5-10 POPS THROUGH THU FOR ANY ROGUE SHRA OR TSRA THAT MAY DVLP ALONG THE SEA BREEZE. && .PRELIMINARY POINT TEMPS/POPS... CORPUS CHRISTI 96 78 97 76 96 / 10 10 10 10 20 VICTORIA 93 75 94 75 95 / 10 10 10 10 20 LAREDO 101 79 102 79 103 / 30 10 10 10 10 ALICE 99 76 99 75 100 / 10 10 10 10 20 ROCKPORT 91 81 91 79 90 / 10 10 10 10 20 COTULLA 100 75 102 75 101 / 30 10 10 10 10 KINGSVILLE 97 77 98 77 98 / 10 10 10 10 20 NAVY CORPUS 91 81 92 80 90 / 10 10 10 20 20 && .CRP WATCHES/WARNINGS/ADVISORIES... TX...NONE. GM...NONE. && JR/76...SHORT TERM TE/81...LONG TERM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 424 AM CDT FRI JUL 27 2012 GMZ230-235-250-255-270-275-TXZ229>234-239>247-281100- 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- 424 AM CDT FRI JUL 27 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH TEXAS AND THE MIDDLE TEXAS COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORMS WILL OCCUR ACROSS MAINLY WEBB COUNTY THIS MORNING. HEAVY RAINFALL WITH LOCALIZED FLOODING...SMALL HAIL...AND FREQUENT CLOUD TO GROUND LIGHTNING IS POSSIBLE. HEAT INDICES WILL RANGE FROM 105 TO 109 DEGREES ACROSS THE SOUTHERN COASTAL BEND THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY HEAT INDICES BETWEEN 105 AND 109 DEGREES MAY OCCUR BRIEFLY DURING THE AFTERNOON AND EARLY EVENING HOURS ACROSS MUCH OF SOUTH TEXAS EACH DAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. JR/TE
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 324 AM CDT FRI JUL 27 2012 TXZ239-270930- WEBB- 324 AM CDT FRI JUL 27 2012 ...STRONG THUNDERSTORMS WERE AFFECTING WEBB COUNTY... AT 321 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A LINE OF STRONG THUNDERSTORM STRETCHING FROM 10 MILES NORTH OF LAREDO...SOUTHEAST TO NEAR AGUILARES. THESE STRONG STORMS WERE MOVING TOWARDS THE NORTH AT 15 MPH. SMALL HAIL...AND WINDS 30 TO 40 MPH ARE EXPECTED WITH THIS STORM. JR
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CORPUS CHRISTI TX 420 AM CDT FRI JUL 27 2012 TXZ239-271015- WEBB- 420 AM CDT FRI JUL 27 2012 ...A STRONG THUNDERSTORM WAS AFFECTING WEBB COUNTY... AT 417 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A LINE OF STRONG STORM STRETCHING FROM JUST NORTH OF THE COLUMBIA BRIDGE TO THE FAR NORTH SIDE OF LAREDO. THESE STORMS WERE MOVING SLOWLY TO THE NORTHWEST. SMALL HAIL...DEADLY CLOUD TO GROUND LIGHTNING...VERY HEAVY RAINFALL...AND WINDS 30 TO 40 MPH ARE EXPECTED WITH THIS STORM. JR
The Corpus Christi radar (KCRP), 193 km away, was scanning. The volume nearest the first event began at 09:45 UTC.
4 flash flood. Local standard time, as filed.
Flooding was reported on the far north side of Laredo in the San Isidro subdivision.
The exit ramp and access road on Interstate 35 at mile marker 12 was closed due to flooding.
Minor flooding of roadways occurred in the vicinity of Ranchitos Las Lomas on Highway 59 northeast of Laredo.
Laredo Fire Chief reported flash flooding across the north and northeast side of the city. Portions of Interstate 35 were closed north of Laredo near mile marker 12 due to debris blocking the roadway. Several high water rescues occurred with motorists stranded in high water in northeast Laredo. One person was evacuated from her home due to rising water near the intersection of Shiloh Road and McPherson Road. Eleven people were evacuated from a home near Orange Blossom Loop. Around 100 homes were damaged by the flood waters in northeast Laredo with many of the homes receiving damage in the tens of thousands of dollars.
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: 400285, 400286, 400289, 400287.