Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 61, NWS Houston/Galveston, TX

May 10, 2013Brazoria County, Fort Bend County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 10, 2013, 10:32 AM CDT for Brazoria County, Fort Bend County, Texas. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 10, 2013, 10:32 AM CDT (15:32 UTC)
Expired: May 10, 2013, 11:00 AM CDT
In force: 28 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon

Counties Brazoria County, TX, Fort Bend County, TX

The radar

The Houston radar (KHGX), 53 km from the middle of the area, began a volume at 15:35 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 10, 9:02 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 3.5 hours before the alert went out and 247 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 2458 J/kg
Mixed-layer CIN: -177 J/kg
Mixed-layer LCL: 484 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 115 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 5.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 10, 9:27 AM CDT, 1 hour 5 minutes earlier.

Area forecast discussion, May 10, 9:27 AM CDT, 1 hour 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
927 AM CDT FRI MAY 10 2013

.UPDATE...
QUICK UPDATE THIS MORNING TO INCLUDE SEVERE THUNDERSTORM WATCH
#155 FOR MOST OF SOUTHEAST TEXAS. WITH THE RAINFALL RECEIVED
DURING THE OVERNIGHT HOURS AND CURRENT RADAR TRENDS HAVE ALSO
EXPANDED THE FLASH FLOOD WATCH FURTHER SOUTH TO INCLUDE HARRIS AND
SURROUNDING COUNTIES. 38

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      80  62  78  59  82 /  70  40  40  10  10
HOUSTON (IAH)              81  64  82  63  83 /  60  50  50  10  10
GALVESTON (GLS)            79  69  79  69  80 /  60  60  60  10  20

&&

.HGX WATCHES/WARNINGS/ADVISORIES...
TX...FLASH FLOOD WATCH UNTIL 6 PM CDT THIS EVENING FOR THE FOLLOWING
     ZONES: FORT BEND...GRIMES...HARRIS...LIBERTY...MONTGOMERY...
     POLK...SAN JACINTO...WALKER...WALLER.

GM...NONE.
&&

DISCUSSION...38
AVIATION/MARINE...45

Hazardous weather outlook, May 10, 5:31 AM CDT, 5 hours 1 minute before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
531 AM CDT FRI MAY 10 2013

TXZ163-164-176>179-195>200-210>214-226-227-235>238-111045-
AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND-
GALVESTON-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA-
MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-WASHINGTON-
WHARTON-
531 AM CDT FRI MAY 10 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST TEXAS.

...LOCALLY HEAVY RAIN AND SLIGHT CHANCE OF SEVERE THUNDERSTORMS
TODAY AND TONIGHT...

.DAY ONE...TODAY AND TONIGHT

THE NEXT UPPER LEVEL DISTURBANCE AND ASSOCIATED SHOWERS AND
THUNDERSTORMS WILL BE MOVING INTO THE REGION FROM CENTRAL TEXAS
LATER THIS MORNING AND AFTERNOON. MOST LOCATIONS WILL SEE AVERAGE
RAINFALL AMOUNTS BETWEEN 1/2 AND 1 INCH. HOWEVER...THE WEATHER
PATTERN ALSO SUPPORTS TRAINING STORMS THAT CAN PRODUCE LOCALIZED
VERY HEAVY RAINFALL. YESTERDAY AND LAST NIGHT...SWATHS OF 3 TO 7
INCH AMOUNTS WERE OBSERVED AND SIMILAR AMOUNTS ARE AGAIN POSSIBLE
TODAY. CONFIDENCE AS TO EXACTLY WHERE AND WHEN THIS WILL OCCUR IS
LOW. LOCATIONS THAT HAVE ALREADY RECEIVED HEAVY RAIN ARE AT A
GREATER RISK OF FLOODING SHOULD SIMILAR DOWNPOURS OCCUR THERE
TODAY.

ANOTHER DISTURBANCE IS FORECAST TO MOVE ACROSS SOUTHERN PARTS OF
THE REGION TONIGHT. AREAS GENERALLY SOUTH OF I-10...AND OFFSHORE...APPEAR
TO HAVE THE BETTER CHANCES OF SEEING HAZARDOUS WEATHER WITH THIS
DISTURBANCE.

THE PRIMARY WEATHER THREAT THROUGH TONIGHT WILL BE FLOODING ASSOCIATED
WITH LOCALIZED HEAVY RAINFALL. A FEW ISOLATED SEVERE STORMS ARE
ALSO POSSIBLE WITH SOME DAMAGING WINDS AND HAIL.

MARINERS SHOULD EXPECT HIGHER WINDS AND SEAS NEAR STORMS...ESPECIALLY
LATER THIS AFTERNOON AND TONIGHT.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE COLD FRONT AND ASSOCIATED SHOWERS AND STORMS DESCRIBED ABOVE
SHOULD PUSH OFFSHORE SATURDAY MORNING AND AFTERNOON...ENDING THE
THREAT OF HAZARDOUS WEATHER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY. WE ALSO ENCOURAGE REPORTS
OF SIGNIFICANT WEATHER VIA TWITTER. OUR USERNAME IS @NWSHOUSTON.

In the hours before

Local storm report, May 10, 9:27 AM CDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
927 AM CDT FRI MAY 10 2013

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

0840 AM     HAIL             3 W BELLVILLE           29.95N  96.31W
05/10/2013  E1.00 INCH       AUSTIN             TX   PUBLIC

            NICKEL TO QUARTER SIZED HAIL JUST WEST OF BELLVILLE.

&&

EVENT NUMBER HGX1300070

PK

Special weather statement, May 10, 9:34 AM CDT, 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
934 AM CDT FRI MAY 10 2013

TXZ210-226-235-101515-
JACKSON TX-COLORADO TX-WHARTON TX-
934 AM CDT FRI MAY 10 2013

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL JACKSON...SOUTH
CENTRAL COLORADO AND WEST CENTRAL WHARTON COUNTIES UNTIL 1015 AM
CDT...

AT 930 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR SUBLIME...OR 10 MILES EAST OF
HALLETTSVILLE...MOVING EAST AT 35 MPH.

HAIL UP TO THE SIZE OF PEAS AND WIND GUSTS UP TO 40 MPH WILL BE
POSSIBLE WITH THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF EXTREME NORTH
CENTRAL JACKSON...SOUTH CENTRAL COLORADO AND WEST CENTRAL WHARTON
COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 2933 9656 2943 9665 2945 9628 2919 9629
      2923 9670
TIME...MOT...LOC 1430Z 270DEG 29KT 2947 9676

Local storm report, May 10, 10:01 AM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1001 AM CDT FRI MAY 10 2013

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

0855 AM     HAIL             7 ESE CALDWELL          30.49N  96.59W
05/10/2013  M0.75 INCH       BURLESON           TX   TRAINED SPOTTER

            PEA TO MARBLE SIZED HAIL BETWEEN CALDWELL AND SNOOK.

&&

EVENT NUMBER HGX1300071

PK

Special weather statement, May 10, 10:11 AM CDT, 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1011 AM CDT FRI MAY 10 2013

TXZ210-226-227-235-236-101600-
JACKSON TX-MATAGORDA TX-FORT BEND TX-COLORADO TX-WHARTON TX-
1011 AM CDT FRI MAY 10 2013

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN JACKSON...WEST CENTRAL
MATAGORDA...SOUTHWESTERN FORT BEND...SOUTHEASTERN COLORADO AND
WHARTON COUNTIES UNTIL 1100 AM CDT...

AT 1008 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 12 MILES
SOUTH OF EAGLE LAKE TO GANADO...OR ALONG A LINE EXTENDING FROM 15
MILES NORTH OF EL CAMPO TO 8 MILES NORTHEAST OF EDNA...AND MOVING
SOUTHEAST AT 30 MPH.

HAIL UP TO THE SIZE OF DIMES AND WIND GUSTS UP TO 40 MPH WILL BE
POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
EL CAMPO...WHARTON...GANADO...BOLING-IAGO AND KENDLETON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 2950 9634 2943 9583 2873 9629 2903 9667
TIME...MOT...LOC 1508Z 299DEG 28KT 2941 9634 2907 9657

Local storm report, May 10, 10:29 AM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1029 AM CDT FRI MAY 10 2013

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

0956 AM     HAIL             HOUSTON                 29.77N  95.39W
05/10/2013  M1.00 INCH       HARRIS             TX   AMATEUR RADIO

            QUARTER SIZED HAIL AT BELTWAY 8 AND LEE ROAD.

&&

EVENT NUMBER HGX1300072

PK

Local storm report, May 10, 10:31 AM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1031 AM CDT FRI MAY 10 2013

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

0958 AM     HAIL             HOUSTON                 29.77N  95.39W
05/10/2013  M1.00 INCH       HARRIS             TX   AMATEUR RADIO

            QUARTER SIZED HAIL AT BELTWAY 8 AND OLD HUMBLE ROAD.

&&

EVENT NUMBER HGX1300073

DH

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 9, 7:04 PM CDT	Severe Thunderstorm Warning	HGX	Montgomery, Polk, San Jacinto, Walker	41 min
May 9, 7:24 PM CDT	Severe Thunderstorm Warning	HGX	Polk, Trinity	36 min
May 9, 7:36 PM CDT	Severe Thunderstorm Warning	HGX	Polk, San Jacinto	39 min
May 9, 9:11 PM CDT	Special Weather Statement	HGX	Grimes	49 min
May 9, 9:21 PM CDT	Areal Flood Advisory	HGX	Grimes, Madison, Polk, San Jacinto, Trinity, Walker	114 min
May 9, 11:17 PM CDT	Areal Flood Advisory	HGX	San Jacinto, Trinity, Walker	58 min
May 10, 1:11 AM CDT	Special Weather Statement	HGX	Colorado	34 min
May 10, 1:25 AM CDT	Special Weather Statement	HGX	Austin	35 min
May 10, 1:52 AM CDT	Special Weather Statement	HGX	Harris	38 min
May 10, 1:55 AM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Fort Bend, Harris	35 min
May 10, 2:01 AM CDT	Special Weather Statement	HGX	Austin	29 min
May 10, 2:21 AM CDT	Special Weather Statement	HGX	Waller	39 min
May 10, 2:31 AM CDT	Severe Thunderstorm Warning	HGX	Chambers, Harris, Liberty	44 min
May 10, 2:44 AM CDT	Areal Flood Advisory	HGX	Brazoria, Chambers, Fort Bend, Harris, Liberty	2 hr
May 10, 2:47 AM CDT	Special Marine Warning	HGX		88 min
May 10, 3:13 AM CDT	Flash Flood Warning	HGX	Harris	2 hr
May 10, 3:41 AM CDT	Special Weather Statement	HGX	Chambers	34 min
May 10, 4:18 AM CDT	Flash Flood Watch	HGX	Fort Bend, Grimes, Harris, Liberty, Montgomery, Polk and 3 more	24 hr
May 10, 8:29 AM CDT	Special Weather Statement	HGX	Austin	31 min
May 10, 8:32 AM CDT	Special Weather Statement	HGX	Austin, Waller	43 min
May 10, 8:53 AM CDT	Severe Thunderstorm Warning	HGX	Austin, Waller	37 min
May 10, 9:01 AM CDT	Special Weather Statement	HGX	Brazos	44 min
May 10, 9:09 AM CDT	Special Weather Statement	HGX	Colorado	51 min
May 10, 9:18 AM CDT	Special Weather Statement	HGX	Fort Bend	42 min
May 10, 9:34 AM CDT	Special Weather Statement	HGX	Wharton	41 min
May 10, 9:43 AM CDT	Severe Thunderstorm Warning	HGX	Colorado, Jackson, Wharton	32 min
May 10, 9:49 AM CDT	Areal Flood Advisory	HGX	Austin, Colorado, Fort Bend, Harris, Waller, Wharton	116 min
May 10, 9:54 AM CDT	Severe Thunderstorm Warning	HGX	Harris, Liberty	36 min
May 10, 10:02 AM CDT	Flash Flood Warning	HGX	Austin, Fort Bend, Harris, Waller	3 hr
May 10, 10:02 AM CDT	Severe Thunderstorm Warning	HGX	Fort Bend, Harris	28 min
May 10, 10:11 AM CDT	Special Weather Statement	HGX	Wharton	49 min
May 10, 10:38 AM CDT	Tornado Warning	HGX	Brazoria, Fort Bend	37 min
May 10, 10:55 AM CDT	Special Marine Warning	HGX		95 min
May 10, 10:58 AM CDT	Special Weather Statement	HGX	Chambers	47 min
May 10, 11:00 AM CDT	Special Marine Warning	HGX		90 min
May 10, 11:05 AM CDT	Tornado Warning	HGX	Brazoria, Galveston	25 min
May 10, 11:07 AM CDT	Areal Flood Advisory	HGX	Brazoria, Fort Bend, Galveston, Harris, Matagorda, Wharton	3 hr
May 10, 11:19 AM CDT	Special Weather Statement	HGX	Brazoria, Matagorda	41 min
May 10, 11:25 AM CDT	Severe Thunderstorm Warning	HGX	Brazoria, Chambers, Galveston, Harris	50 min
May 10, 11:38 AM CDT	Special Marine Warning	HGX		37 min
May 10, 11:43 AM CDT	Special Weather Statement	HGX	Chambers	47 min
May 10, 11:46 AM CDT	River Flood Warning	HGX	Harris	139 days
May 10, 12:17 PM CDT	Special Marine Warning	HGX		58 min
May 10, 1:22 PM CDT	Special Marine Warning	HGX		38 min
May 10, 1:30 PM CDT	Special Marine Warning	HGX		30 min
May 10, 1:37 PM CDT	Special Weather Statement	HGX	Chambers	23 min
May 10, 2:26 PM CDT	Special Marine Warning	HGX		49 min
May 10, 2:29 PM CDT	Small Craft Advisory	HGX		91 min
May 10, 3:18 PM CDT	Special Marine Warning	HGX		42 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013 Every severe thunderstorm warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.