South Texas Heavy Rain & Severe Weather Events for May 14th & 15th 2010

Summary

On the morning of May 14th 2010, showers and thunderstorms began developing across South-Central Texas. These showers and thunderstorms were triggered by an upper level disturbance interacting with a stalled frontal boundary across the Hill Country along with abundant Gulf moisture and an unstable air mass. By noon, these showers and thunderstorms began to expand and move southeastward into northern portions of South Texas. An outflow boundary began to develop as the thunderstorms continued to merge and strengthen. This outflow boundary then pushed southward into the remainder of South Texas during the afternoon and evening hours on the 14th. The warm, moist and unstable conditions ahead of this outflow boundary produced heavy rain and isolated severe thunderstorms primarily across the northern portions of South Texas. This whole complex of storms weakened before midnight due to the loss of daytime heating.

A squall line developed in the early morning hours on the 15th across South-Central Texas. This squall line accelerated southeastward towards South Texas during the morning hours. This squall line reached the northern portions of South Texas by 400 AM CDT and exited the offshore waters by the early afternoon on the 15th. Strong winds up to 65 mph and heavy rain up to 7 inches fell.

These two thunderstorm events produced widespread flooding in the Victoria (where around 9 inches total fell) and Kingsville areas. Many creeks and streams spilled out of their banks in these two cities. The strong winds associated with this squall line produced downed power lines and tree limbs across portions of South Texas.

Radar Loops

KCRP Radar Reflectivity loop beginning at 1801 UTC on 05/14/10 and ending at 0317 UTC on 05/15/10.

KCRP Radar Reflectivity loop beginning at 0800 UTC on 05/15/10 and ending at 1908 UTC on 05/15/10.

Satellite Loops

Visible Satellite loop beginning at 1800 UTC on 05/14/10 and ending at 0015 UTC on 05/15/10.

Infrared Satellite loop beginning at 0700 UTC on 05/15/10 and ending at 1815 UTC on 05/15/10.

Photos

Kingsville Flooding Pictures Victoria Flooding Pictures

Kingsville Flooding Photos

Victoria Flooding Photos

Storm Reports

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0412 PM FLASH FLOOD 4 E TILDEN 28.45N 98.47W
05/14/2010 MCMULLEN TX COUNTY OFFICIAL

WATER OVER ROAD AT CR 308 AND CR 306...EAST OF TILDEN.

0918 PM HAIL 7 SSE REALITOS 27.34N 98.49W
05/14/2010 E0.25 INCH DUVAL TX PUBLIC

PEA SIZE HAIL COVERED THE GROUND AT CR 260 AND CR 250.


0630 AM TSTM WND DMG TYNAN 28.16N 97.73W
05/15/2010 SAN PATRICIO TX PUBLIC

TREE LIMBS WENT THROUGH HOUSE WALL.

0700 AM FLASH FLOOD VICTORIA 28.82N 96.98W
05/15/2010 VICTORIA TX FIRE DEPT/RESCUE

EM/FIRE CHIEF REPORTED STREET FLOODING COUNTY WIDE. 30-40
PERCENT OF CITY STREETS IN VICTORIA ARE IMPASSABLE DUE TO
FLOODING. VICTORIA FIRE DEPARTMENT HAS RESPONDED TO
MULTIPLE CALLS OF FLOODING AND WATER RESCUES. WATER HAS
BEEN REPORTED IN SEVERAL HOMES.

0700 AM TSTM WND DMG VICTORIA 28.82N 96.98W
05/15/2010 VICTORIA TX TRAINED SPOTTER

LARGE TREE LIMBS KNOCKED INTO THE SIDE OF THE HOUSE.

0700 AM TSTM WND GST VICTORIA 28.82N 96.98W
05/15/2010 E60.00 MPH VICTORIA TX TRAINED SPOTTER

APPROXIMATED WINDS OF 60 MPH REPORTED.

0743 AM HEAVY RAIN VICTORIA 28.82N 96.98W
05/15/2010 M6.41 INCH VICTORIA TX TRAINED SPOTTER

24 HOUR AMOUNT SINCE YESTERDAY MORNING.

0812 AM HAIL 2 W KINGSVILLE 27.51N 97.89W
05/15/2010 E0.75 INCH KLEBERG TX TRAINED SPOTTER

0812 AM TSTM WND GST 2 W KINGSVILLE 27.51N 97.89W
05/15/2010 E65.00 MPH KLEBERG TX TRAINED SPOTTER

0812 AM FLASH FLOOD 2 W KINGSVILLE 27.51N 97.89W
05/15/2010 KLEBERG TX TRAINED SPOTTER

WIDE-SPREAD FLOODING. 1.82 INCHES FELL AT COUNTY
COURTHOUSE. KING AVENUE AND 14TH STREET WERE BOTH
FLOODED. SEVERAL MANHOLE COVERS CAME OFF WITH SEWAGE
FLOWING INTO CITY STREETS.

0815 AM HEAVY RAIN INEZ 28.88N 96.78W
05/15/2010 E7.80 INCH VICTORIA TX AMATEUR RADIO

MEASURED RAINFALL NOON MAY 14 TO 815 AM MAY 15

0829 AM TSTM WND DMG 2 E RICARDO 27.42N 97.82W
05/15/2010 KLEBERG TX TRAINED SPOTTER

SEVERAL LARGE MESQUITE TREE LIMBS AND ONE FULL TREE WERE
SNAPPED BY WINDS.

0829 AM HEAVY RAIN 2 E RICARDO 27.42N 97.82W
05/15/2010 E3.00 INCH KLEBERG TX TRAINED SPOTTER

3 INCHES OF RAIN FELL IN ONE HOUR.

0830 AM HEAVY RAIN 1 SW MISSION VALLEY 28.84N 97.16W
05/15/2010 M5.74 INCH VICTORIA TX TRAINED SPOTTER

5.74 INCHES OF RAIN MEASURED IN A 3 HOUR TIME SPAN

0832 AM TSTM WND DMG KINGSVILLE 27.51N 97.86W
05/15/2010 KLEBERG TX EMERGENCY MNGR

FEW TREES AND POWER LINES WERE BLOWN OVER.

0835 AM HEAVY RAIN CHOKE CANYON 28.51N 98.32W
05/15/2010 M4.00 INCH LIVE OAK TX TRAINED SPOTTER

24 HOUR AMOUNT ON THE NORTH END OF CHOKE CANYON DAM.

0845 AM TSTM WND DMG KINGSVILLE 27.51N 97.86W
05/15/2010 KLEBERG TX TRAINED SPOTTER

SEVERAL TREE LIMBS WERE KNOCKED DOWN ON THE WEST SIDE OF
THE CITY.

0930 AM FLASH FLOOD KINGSVILLE 27.51N 97.86W
05/15/2010 KLEBERG TX TRAINED SPOTTER

TRANQUITAS CREEK IS OVERFLOWING AND MAKING 14TH AND 17TH
STREETS IMPASSABLE.

Rainfall

72 Hour Rainfall ending at 700 AM CDT on May 16th 2010



Location Rainfall Amount
Victoria Guadulaupe 9.12
Victoria 14 W 8.36
Victoria 11 W 8.20
Victoria 2 S 7.74
Victoria 1 E 7.30
Bloomington 6.37
Inez 6.32
Victoria Airport ASOS 6.03
Coleto Creek 5.53
Three Rivers 4.88
Port Lavaca 4.70
Goliad 10 NE 4.26
Point Comfort 3.81
Goliad 2 E 3.59
Weser 3.05
Location Rainfall Amount
Indianola 2.94
George West 8 NE 2.86
Kingsville 6 NE 2.25
Cross 2.09
Austwell 2.04
Whitsett 2.03
Beeville 12 NE 2.02
Mathis 2.00
Bishop 1.70
Aransas Pass 1.68
Loma Alta 1.60
Kingsville Navy 1.51
Fowlerton 1.36
Padre Island 1.04
Corpus Christi CWOP 1.00

Storm Total Rainfall Amounts for May 14th and 15th 2010


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