Texas, 2010

Tornado in Texas, July 2, 2010

July 2, 2010 · NWS BRO · 1 event in 1 county or zone

Scattered thunderstorms, developing in the residual shear zone left behind by Hurricane Alex more than a day earlier, produced additional rainfall across the Upper Valley and Brush Country of Deep South Texas on July 2nd. One of these storms strengthened over northern Jim Hogg County into southern Duval County, and fed on the low level rotation to generate a mini-supercell which quickly dropped…

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
$1.5 million
Crop damage
None recorded
Events
1

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.

What happened

The episode as NWS BRO wrote it up.

Scattered thunderstorms, developing in the residual shear zone left behind by Hurricane Alex more than a day earlier, produced additional rainfall across the Upper Valley and Brush Country of Deep South Texas on July 2nd. One of these storms strengthened over northern Jim Hogg County into southern Duval County, and fed on the low level rotation to generate a mini-supercell which quickly dropped a tornado in Hebbronville.

Damage was sufficient to allow the area to be placed into the Federal Disaster Declaration area, lumped in with flood/river flood damage near and along the Rio Grande.

What forecasters said that day

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 Brownsville, TX wrote its last area forecast discussion before the first event at Jul 2, 1:13 PM CST, 2 hours 56 minutes earlier.

Area forecast discussion, Jul 2, 1:13 PM CST, 2 hours 56 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
213 PM CDT FRI JUL 2 2010

.SHORT TERM /TONIGHT THROUGH 7 AM SUNDAY/...500MB RIDGE ACROSS
THE LOWER MISSISSIPPI RIVER VALLEY EXTENDING INTO THE WESTERN GULF
OF MEXICO TONIGHT SHOULD WEAKEN ACROSS THE WESTERN GULF SATURDAY
INTO SAT NIGHT AS A 500MB INVERTED TROUGH/LOW ACROSS THE EASTERN
GULF MOVES WESTWARD. LOW TO MID LEVEL MOISTURE IS EXPECTED TO
REMAIN HIGH ACROSS DEEP SOUTH TEXAS AND THIS WILL CONTINUE TO
PROVIDE A GOOD CHANCE OF SHOWERS WITH ISOLATED THUNDERSTORMS
TONIGHT INTO SATURDAY BEFORE SUBSIDENCE INCREASES ACROSS THE
WESTERN GULF SAT NIGHT.

&&

.LONG TERM /SUNDAY THROUGH FRIDAY...THE SYNOPTIC PATTERN THIS
PERIOD SHOWS MID LEVEL HIGH PRESSURE EXTENDING NORTH TO SOUTH
FROM THE CENTRAL PLAINS INTO NORTHWEST GULF EARLY ON SHIFTING EAST
THROUGH THE PERIOD. A SERIES OF DISTURBANCES ROTATING AROUND THE
BOTTOM OF RIDGE EVENTUALLY CARVE OUT BROAD LOW PRESSURE ACROSS THE
NORTHWEST GULF. MOISTURE PROFILES CONTINUE TO SHOW A VERY DEEP
MOIST AIRMASS WITH PWATS RANGING BETWEEN 1.8 AND 2.2 INCHES
THROUGH THE EXTENDED PERIOD. MAIN DRIVING FACTOR FOR POPS SUNDAY
AND MONDAY SHOULD SEABREEZE AND INSTABILITY FROM AFTERNOON
HEATING. SLIGHT CHANCES MAINLY DURING THE MAX HEATING HOURS SHOULD
BE SUFFICIENT AT THIS TIME. DO NOT SEE ANY SIGNIFICANT DISTURBANCE
TO INCREASE POPS HIGHER THEN 20 PERCENT. POPS WERE INCREASED TO
CHANCE CATEGORY THE LATTER HALF OF THE PERIOD WITH BROAD LOW
PRESSURE DEVELOPING AND WITH THE ATMOSPHERE BECOMING A BIT MORE
UNSTABLE. LITTLE CHANGE IN TEMPERATURES WERE MADE WITH MOST
LOCATIONS REMAINING NEAR SEASONAL AVERAGES WITH ABUNDANT MOISTURE AND
PARTLY TO MOSTLY CLOUDY SKIES.

&&

.MARINE /TONIGHT THROUGH 7 AM SUNDAY/...SEAS WERE NEAR 8 FEET WITH
SOUTHEAST WINDS NEAR 19 KNOTS AT BUOY020 EARLY THIS AFTERNOON.
SURFACE HIGH PRESSURE ACROSS THE EASTERN UNITED STATES AND LOW
PRESSURE ACROSS NORTHERN MEXICO WILL CONTINUE TO PROVIDE A
RELATIVELY STRONG PRESSURE GRADIENT ACROSS THE COASTAL WATERS
TONIGHT INTO SATURDAY. MODERATE TO STRONG SOUTHEAST WILL PREVAIL
OFFSHORE THE LOWER TX COAST AS A RESULT DIMINISHING TO MODERATE
SAT NIGHT AS THE GRADIENT RELAXES SOMEWHAT. WILL CONTINUE SMALL
CRAFT ADVISORIES FOR THE OFFSHORE WATERS TONIGHT AS SEAS GRADUALLY
DIMINISH LATE TONIGHT.

SUNDAY THROUGH WEDNESDAY... PRESSURE GRADIENT TO REMAIN WEAK
DURING THE EXTENDED PERIOD. LIGHT TO MODERATE ONSHORE WINDS AND
LOW SEAS ARE EXPECTED. THERE WILL REMAIN A CHANCE FOR SHOWERS OR
EVEN A THUNDERSTORM TO DEVELOP EACH DAY OR OVERNIGHT. RAIN CHANCES
COULD INCREASE LATER TUESDAY INTO WEDNESDAY AS WELL AS THURSDAY.

&&

.AVIATION...SATELLITE IMAGES AND SURFACE OBSERVATIONS INDICATED
MOSTLY HIGH CLOUDS ACROSS DEEP SOUTH TX THIS AFTERNOON WITH SOME LOW
TO MID LEVEL CLOUDS ACROSS THE COASTAL SECTIONS. CEILINGS WERE NEAR
2200FT AT KBRO TO NEAR 3300FT AT KHRL. MVFR TO VFR CONDITIONS TO
PERSIST THIS AFTERNOON WITH ISOLATED SHOWERS IN THE VICINITY OF
LOCAL AERODROMES. EXPECT MVFR CONDITIONS TO DEVELOP TONIGHT AS
ABUNDANT TROPICAL MOISTURE ALLOWS CEILINGS TO DEVELOP LATE TONIGHT
AND LOWER. MVFR CONDITIONS S

&&

.PRELIMINARY POINT TEMPS/POPS...
BAYVIEW/PORT ISABEL  82  91  82  89 /  40  40  20  20
BROWNSVILLE          80  91  80  91 /  40  40  20  20
HARLINGEN            79  92  79  92 /  40  40  20  20
MCALLEN              80  93  79  93 /  40  40  20  20
RIO GRANDE CITY      80  95  80  94 /  40  40  20  20
SOUTH PADRE ISLAND   83  91  83  87 /  40  40  20  20

&&

.BRO WATCHES/WARNINGS/ADVISORIES...
TX...HIGH SURF ADVISORY UNTIL 7 PM CDT THIS EVENING FOR TXZ251-256-
     257.

GM...SMALL CRAFT ADVISORY UNTIL 1 AM CDT SATURDAY FOR GMZ150-155-170-
     175.

&&

THIS PRODUCT IS ALSO AVAILABLE ON THE WEB AT:
HTTP://WWW.WEATHER.GOV/BROWNSVILLE

61...SHORT TERM
59...LONG TERM
Hazardous weather outlook, Jul 2, 6:15 AM CST, 9 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE BROWNSVILLE TX
715 AM CDT FRI JUL 2 2010

TXZ248>257-031100-
ZAPATA-JIM HOGG-BROOKS-KENEDY-STARR-HIDALGO-INLAND WILLACY-
INLAND CAMERON-COASTAL WILLACY-COASTAL CAMERON-
715 AM CDT FRI JUL 2 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR DEEP SOUTH TEXAS.

.DAY ONE...TODAY AND TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP LATER
THIS AFTERNOON AND SOME STORMS MAY PRODUCE HEAVY RAINFALL WHICH WILL
PROVIDE LOCALIZED FLOODING IN SOME AREAS.

A HIGH SURF ADVISORY IS IN EFFECT UNTIL 7 PM TONIGHT FOR ALL
LOCATIONS ALONG THE LOWER TEXAS COAST. THE SURF WILL REMAIN AGITATED
TODAY AS LARGE WAVES CONTINUE TO BREAK FROM THE EAST IN THE SURF
ZONE.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS COULD PRODUCE BRIEF
HEAVY RAIN AND MINOR STREET FLOODING ON SATURDAY AND SATURDAY NIGHT.
OTHERWISE GENERALLY HOTTER AND DRIER CONDITIONS WILL RETURN TO THE
REGION ON AND AFTER SUNDAY.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS NOT EXPECTED TODAY.

GMZ130-132-135-150-155-170-175-031100-
LAGUNA MADRE FROM THE PORT OF BROWNSVILLE TO THE ARROYO COLORADO-
LAGUNA MADRE FROM THE ARROYO COLORADO TO 5 NM NORTH OF PORT
MANSFIELD TX-
LAGUNA MADRE FROM 5 NM NORTH OF PORT MANSFIELD TO BAFFIN BAY TX-
COASTAL WATERS FROM PORT MANSFIELD TO THE RIO GRANDE OUT 20 NM-
COASTAL WATERS FROM BAFFIN BAY TO PORT MANSFIELD OUT 20 NM-
WATERS FROM PORT MANSFIELD TO THE RIO GRANDE EXTENDING FROM 20 TO
60 NM-
WATERS FROM BAFFIN BAY TO PORT MANSFIELD EXTENDING FROM 20 TO
60 NM-
715 AM CDT FRI JUL 2 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE GULF OF MEXICO AND THE
LAGUNA MADRE.

.DAY ONE...TODAY AND TONIGHT.

A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE LOWER TEXAS GULF WATERS
TODAY AND TONIGHT.

A HIGH SURF ADVISORY IS IN EFFECT FOR THE LOWER TEXAS COASTLINE
UNTIL 7 PM CDT THIS EVENING.

FINALLY...THE RIP CURRENT RISK WILL REMAIN HIGH TODAY DUE TO THE
LOWER TEXAS GULF SWELL ACTIVITY.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION IS NOT EXPECTED TODAY.

SPEECE/CASTILLO

The radar

The Corpus Christi radar (KCRP), 127 km away, was scanning. The volume nearest the first event began at 22:09 UTC.

Open the radar archive at this moment

Event by event

1 tornado. Local standard time, as filed.

Tornado, Jim Hogg

When
July 2, 4:09 PM CST to 4:15 PM CST
Where
Jim Hogg County, 2 mi SSE of Hebbronville to 0.19 mi SW of Hebbronville
Rating
EF1
Path length
1.9 mi
Path width
100 yd
Property damage
$1.5 million
Reported by
NWS Storm Survey
Coordinates
27.293, -98.669

A tornado was reported in the Hebbronville area by the border patrol and public.|A tornado touched down in the Hebbronville area just after 5 pm, flipping a tractor trailer, uprooting trees, snapping large limbs, and causing a gas leak. The tornado knocked out power to at least 1762 AEP Power customers, more than half of the town. The tornado formed along a remnant shear axis left behind after Hurricane Alex dissipated in Mexico. The elevated humidity levels combined with daytime heating and low to mid level turbulence likely contributed to the development of the tornado producing thunderstorm.

A preliminary assessment of damages in Hebbronville indicated areas of EF-1 (85 to 105 mph) winds. The EF-1 damages occurred in the central and southeast areas of Hebbronville into the center of town, EF-0 damages occurred from the center of town to areas northwest of town which included areas around Hebbronville High School.

The tornado formed to the southeast of Hebbronville between 450 and 5 pm. The tornado crossed State Highway 285 about 1/2 mile east of the intersection with State Highway 16, and entered a Texas Department of Transportation maintenance yard, tearing a section off a roof and collapsing a section of a metal parking area. It continued to the north northwest into a residential area, taking the roof off one modular home, snapping several power poles, rolling a mobile home onto its roof, and damaging numerous mesquite trees. The tornado continued moving northwest toward downtown and knocked down numerous power lines, then struck a grocery store and blew a billboard onto a few parked cars. A loaded tractor trailer was rolled onto its roof and against the grocery store. The tornado then moved north northwest, causing lesser tree damage along Maria and Frans Avenues. The weakening tornado crossed over a school, with no notable damage. It then moved by Hebbronville High School’s Gruy stadium, bending a goalpost and knocking over some fencing around tennis courts just west of the school campus. The tornado then lifted, with no damage noted beyond this location.

Considerable damage was rated EF-1 from the southeast side of Hebbronville until reaching downtown, with wind speeds of 90 to 100 mph. EF-0 damage (below 85 mph) was seen from northwest of downtown to the area around the high school.

What these are

Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Texas in 2010Every state in 2010This day in weather historyThe tornado archive for Texas, 2010Warnings in Texas, July 2010

Sources

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: 239624.