Storm Summary

A nearly stationary cold front along with plentiful moisture, an unstable airmass and a strong upper level disturbance set the stage for the development of 4 tornadoes, large hail, and heavy rainfall and flooding across the Coastal Bend from the late afternoon on April 15th to the afternoon on the 16th. 3 confirmed tornadoes occurred in San Patricio County and 1 confirmed tornado in Kleberg County during the morning of the 16th. On the 16th, devastating flooding up to 15 inches occurred in eastern San Patricio and southern Refugio counties, especially in the cities of Portland and Gregory. The large hail occurred during the afternoon on the 15th mostly in the Goliad area due to the interaction with the cold front and the sea breeze.

On the 15th, thunderstorms initially began over the Northern Coastal Bend and Victoria area during the late afternoon. These thunderstorms quickly intensified to produce hail up to golf ball size near Goliad. As the effects from the upper level disturbance began to impact South Texas, the storms began moving northeast into Victoria County. One storm produced quarter-sized hail in Victoria. Very heavy rainfall also occurred, but no flooding was observed. By the end of the evening, strong to severe thunderstorms developed over the southern Coastal Bend and Brush Country, producing quarter-sized hail in Duval County. These thunderstorms continued to build slowly southward overnight on the 15th.

During the morning hours on the 16th, storms continued to develop and move over the same areas due to the upper level flow remaining parallel to the front. This resulted in persistent shower and thunderstorm development over the Coastal Bend and Victoria areas. The result was widespread heavy rainfall between 2 and 6 inches with isolated amounts up to 15 inches near Bayside. Devastating flooding occured in Gregory with nearly 80% of the homes flooded. Other reports of flooding occured in Nueces, Refugio and eastern San Patricio counties.

Several tornado touchdowns occurred in the Portland-Gregory area between 523 and 620 AM CDT on the 16th. One of these was rated as an EF-1. Around 50 homes in Portland sustained wind damage along with lots of tree and fence damage. The other two tornadoes near Gregory were rated as EF-0. The lone tornado in Kleberg county was rated as an EF-0. More information on these tornadoes can be found in the "Tornadoes" section.

Tornadoes

EF1 Tornado (1 Mile East-Southeast of Portland at 523 AM CDT)
Path Length Path Width Radar Image Damage
2 miles 500 yards A NWS Storm Survey concluded a tornado touched down near Lost Creek Drive and moved north through the Portland Country Club producing mainly tree and fence damage. The tornado then moved into the Bay Ridge Subdivision and strengthened, damaging around 50 homes and several vehicles. Maximum sustained winds were estimated at 100 mph.
EF0 Tornado (5 Miles Northwest of Ingleside at 550 AM CDT)
Path Length Path Width Radar Image Damage
1 mile 50 yards A NWS Storm Survey concluded a tornado touched down in a field south of Highway 361 about a mile southeast of Gregory. The tornado flipped over a fireworks stand and damaged the side of an outbuilding. The tornado crossed Highway 361 and dissipated in a field. The winds were estimated around 70 mph.
EF0 Tornado (4 Miles North-Northwest of Ingleside at 620 AM CDT)
Path Length Path Width Damage
1/2 mile 50 yards A NWS Storm Survey concluded a tornado touched down in an open field south of Highway 361 around 2 miles southeast of Gregory. The tornado crossed highway 361 damaging a few power poles. The winds were estimated around 70 mph.
EF0 Tornado (5 Miles Northeast of Riviera at 830 AM CDT)
Path Length Path Width Picture Radar Image Damage
Unknown Unknown A County Official reported a tornado on the ground near FM 771 east of Riviera.

Rainfall

Radar Loop

Damage Photos from Portland & Gregory

Storm Pictures

Storm Reports


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

0543 PM     HAIL             9 NW GOLIAD             28.77N 97.48W
04/15/2012  M1.75 INCH       GOLIAD             TX   LAW ENFORCEMENT

            GOLF BALL SIZED HAIL REPORTED OFF FARM-TO-MARKET ROAD
            1726.

0610 PM     HAIL             3 NW GOLIAD             28.71N 97.43W
04/15/2012  M1.50 INCH       GOLIAD             TX   SHIP

            PING PONG BALL SIZED HAIL REPORTED OFF FARM-TO-MARKET
            ROAD 1726.

0625 PM     HAIL             GOLIAD                  28.67N 97.39W
04/15/2012  M1.75 INCH       GOLIAD             TX   TRAINED SPOTTER

            SPOTTER REPORTED GOLF BALL SIZED HAIL IN GOLIAD.

0644 PM     HAIL             1 WNW FANNIN            28.70N 97.24W
04/15/2012  M1.00 INCH       GOLIAD             TX   TRAINED SPOTTER

            SPOTTER REPORTED QUARTER SIZED HAIL IN THE TOWN OF
            FANNIN.

0731 PM     HAIL             1 SSW VICTORIA          28.81N 96.99W
04/15/2012  M1.00 INCH       VICTORIA           TX   PUBLIC

            STRIPES CONVENIENCE STORE EMPLOYEE REPORTED QUARTER SIZED
            HAIL AT U.S. 59 AND NORTH LAURENT ST.

0829 PM     HAIL             1 ENE CONCEPCION        27.39N 98.25W
04/15/2012  M1.00 INCH       DUVAL              TX   PUBLIC

            PUBLIC NEAR CRUZ CALLE REPORTED QUARTER SIZED HAIL.

0523 AM     TORNADO          1 ESE PORTLAND          27.87N 97.31W
04/16/2012  F1               SAN PATRICIO       TX   NWS STORM SURVEY

            NWS STORM SURVEY CONCLUDED A TORNADO TOUCHED DOWN NEAR
            LOST CREEK DRIVE AND MOVED NORTH THROUGH THE PORTLAND
            COUNTRY CLUB PRODUCING MAINLY TREE AND FENCE DAMAGE. THE
            TORNADO MOVED INTO THE BAY RIDGE SUBDIVISION AND
            STRENGTHENED, DAMAGING AROUND 50 HOMES AND SEVERAL
            VEHICLES. MAXIMUM WINDS WERE ESTIMATED AT 100 MPH. THE
            TORNADO HAD A PATH LENGTH OF 2 MILES AND PATH WIDTH OF UP
            TO 500 YARDS.

0544 AM     FLASH FLOOD      4 SE WOODSBORO          28.20N 97.28W
04/16/2012                   REFUGIO            TX   LAW ENFORCEMENT

            WATER OVER THE ROAD ON FM 1360 AND ARANSAS RIVER ROAD
            BETWEEN WOODSBORO AND BAYVIEW.

0544 AM     TSTM WND DMG     GREGORY                 27.92N 97.29W
04/16/2012                   SAN PATRICIO       TX   LAW ENFORCEMENT

            DAMAGE TO COTTON GIN NEAR GREGORY ALONG WITH POWERLINES
            DOWN.

0550 AM     TORNADO          5 NW INGLESIDE          27.92N 97.26W
04/16/2012  F0               SAN PATRICIO       TX   NWS STORM SURVEY

            NWS STORM SURVEY CONCLUDED A TORNADO TOUCHED DOWN IN A
            FIELD SOUTH OF HIGHWAY 361 ABOUT A MILE SOUTHEAST OF
            GREGORY. THE TORNADO FLIPPED OVER A FIREWORKS STAND AND
            DAMAGED THE SIDE OF AN OUTBUILDING. THE TORNADO CROSSED
            HIGHWAY 361 AND DISSIPATED IN A FIELD. MAXIMUM WINDS OF
            70 MPH WERE ESTIMATED. THE TORNADO HAD A PATH LENGTH OF 1
            MILE AND A PATH WIDTH OF 50 YARDS.

0620 AM     TORNADO          4 NNW INGLESIDE         27.92N 97.23W
04/16/2012  F0               SAN PATRICIO       TX   NWS STORM SURVEY

            NWS STORM SURVEY CONCLUDED A TORNADO TOUCHED DOWN IN AN
            OPEN FIELD SOUTH OF HIGHWAY 361 ABOUT TWO MILES SOUTHEAST
            OF GREGORY. THE TORNADO CROSSED HIGHWAY 361 DAMAGING A
            FEW POWER POLES. MAXIMUM WINDS OF 70 MPH WERE ESTIMATED.
            THE TORNADO HAD A PATH LENGTH OF 1/2 MILE AND A PATH
            LENGTH OF 50 YARDS.

0720 AM     FLASH FLOOD      GREGORY                 27.92N 97.29W
04/16/2012                   SAN PATRICIO       TX   NWS EMPLOYEE

            CARS UNDER WATER IN GREGORY NEAR HIGHWAY 35.

0725 AM     HAIL             13 WNW LOMA ALTA        28.16N 98.71W
04/16/2012  E0.50 INCH       MCMULLEN           TX   PUBLIC

            REPORTED NEAR FARM TO MARKET ROAD 624.

0755 AM     FLASH FLOOD      PORTLAND                27.88N 97.33W
04/16/2012                   SAN PATRICIO       TX   PUBLIC

            MAJOR STREET FLOODING OCCURRING IN CITY.

0815 AM     FLASH FLOOD      PORTLAND                27.88N 97.33W
04/16/2012                   SAN PATRICIO       TX   NEWSPAPER

            MOORE AVENUE UNPASSABLE BETWEEN 7 AND 815AM DUE TO WATER
            ON ROAD.

0825 AM     FLASH FLOOD      GREGORY                 27.92N 97.29W
04/16/2012                   SAN PATRICIO       TX   NWS EMPLOYEE

            VEHICLES BECOMING STRANDED IN FLOODED ROADWAYS.

0830 AM     TORNADO          5 ENE RIVIERA           27.31N 97.74W
04/16/2012  F0               KLEBERG            TX   COUNTY OFFICIAL

            COUNTY OFFICIAL REPORTED TORNADO ON THE GROUND NEAR FM
            771 EAST OF RIVIERIA. PHOTO LATER SENT TO WFO CONFIRMED
            TORNADO REPORT.

0935 AM     FUNNEL CLOUD     5 E KINGSVILLE          27.51N 97.78W
04/16/2012                   KLEBERG            TX   TRAINED SPOTTER

            FUNNEL CLOUD MAY HAVE BRIEFLY TOUCHED DOWN OVER OPEN
            PASTURE.

0947 AM     FUNNEL CLOUD     PORTLAND                27.88N 97.33W
04/16/2012                   SAN PATRICIO       TX   PUBLIC

0947 AM     FLASH FLOOD      3 NNE ROBSTOWN          27.84N 97.64W
04/16/2012                   NUECES             TX   TRAINED SPOTTER

            STREET FLOODING AT HWY 77 AND LEOPARD ST.

1000 AM     HEAVY RAIN       SW BAYSIDE              28.08N 97.24W
04/16/2012  M15.00 INCH      REFUGIO            TX   COCORAHS

            15.00 INCH STORM TOTAL RAINFALL OBSERVED BY COCORAHS
            OBSERVER.

1023 AM     FLASH FLOOD      7 S BAYSIDE             27.97N 97.24W
04/16/2012                   SAN PATRICIO       TX   EMERGENCY MNGR

            MORE THAN 15 INCHES OF STORM TOTAL RAINFALL.

1023 AM     TSTM WND GST     7 S BAYSIDE             27.97N 97.24W
04/16/2012  E60.00 MPH       SAN PATRICIO       TX   EMERGENCY MNGR

            ALSO PEA SIZE HAIL.

1033 AM     FLASH FLOOD      CORPUS CHRISTI          27.71N 97.29W
04/16/2012                   NUECES             TX   DEPT OF HIGHWAYS

            NUMEROUS ROADS AND INTERSECTIONS FLOODED... I37 UNDER US
            181...TURNAROUND NEAR NUECES CAUSWAY...MANY OTHERS.

1033 AM     FLASH FLOOD      3 NW ROBSTOWN           27.83N 97.70W
04/16/2012                   NUECES             TX   DEPT OF HIGHWAYS

            INTERSECTION OF FM 624 AND US 77 CLOSED IN CALALLEN.

1033 AM     FLASH FLOOD      GREGORY                 27.92N 97.29W
04/16/2012                   SAN PATRICIO       TX   DEPT OF HIGHWAYS

            SPUR 202 AND FM 3284 ARE FLOODED.

1033 AM     FLASH FLOOD      PORTLAND                27.88N 97.33W
04/16/2012                   SAN PATRICIO       TX   DEPT OF HIGHWAYS

            NUMEROUS ROADS FLOODED IN THE AREA...INCLUDING FM 893 AT
            MEMORIAL PARKWAY.

1154 AM     HEAVY RAIN       3 NE ROBSTOWN           27.83N 97.63W
04/16/2012  M6.25 INCH       NUECES             TX   TRAINED SPOTTER

            RAINFALL TOTAL SINCE 745 AM NEAR VIOLET AND LEOPARD IN
            CALALLEN AREA.

1211 PM     HAIL             7 SSE CC NAS            27.60N 97.22W
04/16/2012  E1.25 INCH       NUECES             TX   PUBLIC

            HAIL BROKE FLOOD LIGHTS AT THE ISLAND ITALIAN RESTAURANT
            ON NORTH PADRE ISLAND

1217 PM     MARINE TSTM WIND 9 SSE CC NAS            27.58N 97.22W
04/16/2012  M55.00 MPH       GMZ250             TX   MESONET

            55 MPH WIND GUST /48 KTS/ MEASURED AT BOB HALL PIER.

1218 PM     MARINE TSTM WIND 9 SSE CC NAS            27.58N 97.22W
04/16/2012  M60.00 MPH       GMZ250             TX   MESONET

            MALAQUITE BEACH MARINE SITE MEASURED GUST TO 60 MPH /52
            KTS/.

1227 PM     HAIL             8 SE CC NAS             27.60N 97.21W
04/16/2012  M1.50 INCH       NUECES             TX   PUBLIC

            FELL ON THE BEACH AT THE HOLIDAY INN ON NORTH PADRE
            ISLAND

0100 PM     HEAVY RAIN       PORTLAND                27.88N 97.33W
04/16/2012  M8.60 INCH       SAN PATRICIO       TX   AMATEUR RADIO

            STORM TOTAL PRECIP NEAR CARMEL STREET.




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