A strong subtropical jet stream along with embedded upper level disturbances persisted across South Texas and Mexico between April 12th through April 14th, 2015. Meanwhile, abundant moisture and a very unstable airmass interacted with the strong jet stream and several upper level disturbances to produce 3 separate rounds of severe weather across South Texas during this time period.
The first event began in the late evening on April 12th and continued through the early morning hours on April 13th. This event began with moisture increasing across South Texas. Surface temperatures were warm in the low to mid 80s, while mid and upper levels of the atmosphere were cooler than normal, which led to a very unstable environment. As an upper level disturbance moved across Mexico toward South Texas, storms developed along the Sierra Madre in Mexico. These storms organized into a squall line as they entered South Texas. Wind gusts of 30 to 50 mph with isolated 60 mph wind gusts occurred along and behind this squall line. Isolated wind damage and localized flooding did occur with this squall line. The squall line eventually pushed offshore and weakened in the early morning hours on the 13th.
By the evening of April 13th, another round of severe storms developed. The favorable location of the subtropical jet stream, extremely unstable conditions, and several boundaries across South Texas led to the development of large hail across Bee and Refugio counties. Hail up to tennis ball size associated with a supercell thunderstorm was reported 7 miles southwest of Woodsboro at 901 PM CDT on April 13th.
A second squall line developed in the early morning hours on April 14th due to an approaching cold front, a strong jet stream with an embedded upper level disturbance, and a continued very unstable airmass. The squall line intensified as it moved into the Coastal Bend between 600 and 800 AM CDT on the 14th. Wind gusts along and behind the squall line were generally between 40 and 60 mph. Several locations in Corpus Christi had peak wind gusts of 62 mph.
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0915 PM TSTM WND GST LAREDO 27.53N 99.49W
04/12/2015 E60.00 MPH WEBB TX TRAINED SPOTTER
60 MPH WINDS AND 0.25 - 0.50 INCH HAIL REPORTED IN
ADDITION TO HEAVY RAIN AND FREQUENT LIGHTNING. POWER
OUTAGES ARE OCCURRING.
1045 PM TSTM WND DMG PREMONT 27.36N 98.12W
04/12/2015 JIM WELLS TX EMERGENCY MNGR
TREES AND POWERLINES DOWN IN PREMONT ON 6TH STREET.
1105 PM TSTM WND DMG KINGSVILLE 27.51N 97.86W
04/12/2015 KLEBERG TX EMERGENCY MNGR
POWER OUT ACROSS MUCH OF THE CITY FOR ABOUT 10 MINUTES.
WIDESPREAD POWER LINES DOWN. TIME OF EVENT ESTIMATED BY
RADAR.
1148 PM MARINE TSTM WIND 12 SSW MALAQUITE BEACH 27.30N 97.40W
04/12/2015 M37.00 MPH KLEBERG TX BUOY
WIND GUST 37 KNOTS BAFFIN BAY AT 1148 PM
1148 PM MARINE TSTM WIND 3 NNW MALAQUITE BEACH 27.48N 97.32W
04/12/2015 E38.00 MPH KLEBERG TX BUOY
38 KNOT GUST AT BIRD ISLAND AT 1148 PM
1206 AM MARINE TSTM WIND S PADRE BALLI PARK 27.58N 97.22W
04/13/2015 M51.00 MPH NUECES TX C-MAN STATION
51 KNOT WIND GUST AT BOB HALL PIER
1223 AM FLASH FLOOD GEORGE WEST 28.33N 98.12W
04/13/2015 LIVE OAK TX LAW ENFORCEMENT
BARRIERS IN PLACE IN NORTHEAST GEORGE WEST. WATER OVER
ROAD ALONG COLORADO STREET...INCLUDING THE INTERSECTIONS
OF BOWIE TO AUSTIN STREETS.
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0718 PM TSTM WND DMG 3 E DINERO 28.20N 97.88W
04/13/2015 LIVE OAK TX TRAINED SPOTTER
3 LARGE TREES DOWN
0727 PM HAIL 5 E TYNAN 28.16N 97.65W
04/13/2015 U1.00 INCH BEE TX AMATEUR RADIO
0901 PM HAIL 7 SW WOODSBORO 28.17N 97.41W
04/13/2015 U2.50 INCH REFUGIO TX AMATEUR RADIO
KCRP DUAL POLAR DOPPLER RADAR SUPPORTS THIS REPORT
0915 PM HAIL 5 SSE WOODSBORO 28.17N 97.29W
04/13/2015 M0.88 INCH REFUGIO TX TRAINED SPOTTER
0928 PM HAIL 5 SSE WOODSBORO 28.17N 97.30W
04/13/2015 E1.75 INCH REFUGIO TX BROADCAST MEDIA
BROADCAST MEDIA RELAYED REPORT OF GOLF BALL SIZE HAIL IN
BONNIE VIEW
| Location | Peak Wind Gust (mph) |
|---|---|
| Packery Channel | 62 |
| Corpus Christi Bay | 62 |
| Ingleside | 59 |
| Bob Hall Pier | 58 |
| Rockport (NOS) | 56 |
| Corpus Christi International Airport | 53 |
| South Bird Island | 53 |
| Port A (TCOON) | 49 |
| Nueces Bay | 45 |
| Alice | 45 |
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1259 AM HAIL 2 S COTULLA 28.41N 99.24W
04/14/2015 E1.00 INCH LA SALLE TX PUBLIC
PICTURE OF LARGE HAIL - AT LEAST QUARTER SIZED - ON
FACEBOOK. TIME ESTIMATED BY RADAR
0525 AM HAIL BENAVIDES 27.60N 98.41W
04/14/2015 E0.88 INCH DUVAL TX TRAINED SPOTTER
0525 AM TSTM WND DMG BENAVIDES 27.60N 98.41W
04/14/2015 DUVAL TX TRAINED SPOTTER
LARGE TREE LIMBS BLOWN DOWN...ESTIMATED 60 MPH WINDS.
0553 AM TSTM WND DMG 3 S SKIDMORE 28.21N 97.69W
04/14/2015 BEE TX LAW ENFORCEMENT
POWERLINES DOWN BETWEEN SKIDMORE AND TYNAN
0558 AM HAIL ALICE 27.76N 98.07W
04/14/2015 M0.50 INCH JIM WELLS TX TRAINED SPOTTER
ONE-HALF IN HAIL REPORTED AND ONGOING IN THE CITY OF
ALICE.
0600 AM HAIL SAN DIEGO 27.76N 98.24W
04/14/2015 M0.75 INCH DUVAL TX EMERGENCY MNGR
PENNY SIZED HAIL REPORTED IN THE CITY OF SAN DIEGO.
0610 AM HAIL ALICE 27.76N 98.07W
04/14/2015 E0.75 INCH JIM WELLS TX BROADCAST MEDIA
0635 AM TSTM WND DMG DRISCOLL 27.67N 97.75W
04/14/2015 NUECES TX BROADCAST MEDIA
SEVERALOUTBUILDINGS DAMAGED IN DRISCOLL. ROOF DEBRIS
SPREAD OVER A LARGE AREA.
0700 AM MARINE TSTM WIND 6 SSW PORTLAND 27.80N 97.35W
04/14/2015 M58.00 MPH GMZ230 TX MESONET
AT THE CC BAY TCOON PLATFORM.
0700 AM FLASH FLOOD CALLIHAM 27.86N 97.63W
04/14/2015 NUECES TX TRAINED SPOTTER
SEVERAL FLOODED INTERSECTIONS IN THE CALALLEN/ROBSTOWN
AREA.
0700 AM TSTM WND DMG CORPUS CHRISTI 27.75N 97.42W
04/14/2015 NUECES TX BROADCAST MEDIA
GAS STATION ISLAND COVER TOPPLED.
0700 AM FLASH FLOOD PORTLAND 27.88N 97.33W
04/14/2015 SAN PATRICIO TX EMERGENCY MNGR
CARS STALLED DUE TO FLOODING AT BUDDY GANEM AND HIGHWAY
181.
0710 AM FLASH FLOOD N ROBSTOWN 27.80N 97.66W
04/14/2015 NUECES TX LAW ENFORCEMENT
FLOOD REPORTED FROM COUNTY ROAD 52 TO COUNTY ROAD 73.
0710 AM FLASH FLOOD CORPUS CHRISTI 27.71N 97.29W
04/14/2015 NUECES TX LAW ENFORCEMENT
FLOOD REPORTED AT THE BUSINESS AREA OF BLUCHER ST AND
COOPERS ALLEY.
0710 AM MARINE TSTM WIND 14 SSW NATIONAL SEASHOR 27.30N 97.40W
04/14/2015 M56.00 MPH KLEBERG TX MESONET
AT THE BAFFIN BAY TCOON SITE.
0710 AM TSTM WND GST INGLESIDE 27.87N 97.20W
04/14/2015 M59.00 MPH SAN PATRICIO TX AWOS
MEASURED AT THE INGLESIDE/KTFP AWOS.
0712 AM TSTM WND GST ROCKPORT 28.04N 97.05W
04/14/2015 M57.00 MPH ARANSAS TX MESONET
MEASURED AT THE ROCKPORT TCOON SITE.
0715 AM FLASH FLOOD PORTLAND 27.88N 97.32W
04/14/2015 SAN PATRICIO TX TRAINED SPOTTER
NUMEROUS FLOODED INTERSECTIONS. SOME STRANDED VEHICLES.
0729 AM TSTM WND GST 6 SE CORPUS CHRISTI 27.64N 97.24W
04/14/2015 M62.00 MPH NUECES TX MESONET
MEASURED AT THE PACKERY CHANNEL TCON SITE.
0730 AM FLASH FLOOD ROCKPORT 28.04N 97.05W
04/14/2015 ARANSAS TX EMERGENCY MNGR
NUMEROUS FLOODED ROADS/INTERSECTIONS
0736 AM TSTM WND GST 9 SSE CC NAS 27.58N 97.22W
04/14/2015 M59.00 MPH NUECES TX MESONET
MEASURED AT BOB HALL PIER.
0818 AM FLASH FLOOD 5 W PORTLAND 27.88N 97.41W
04/14/2015 SAN PATRICIO TX DEPT OF HIGHWAYS
LOW WATER CROSSING ON FM2226 IN SAN PATRICIO COUNTY
FLOODED WITH VEHICLES CUT OFF.
1000 AM HEAVY RAIN 1 WSW ROCKPORT 28.04N 97.07W
04/14/2015 M5.97 INCH ARANSAS TX COCORAHS
1000 AM HEAVY RAIN 6 NNW ARANSAS PASS 27.97N 97.18W
04/14/2015 M5.24 INCH ARANSAS TX COCORAHS
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