Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 150, NWS Fort Worth, TX

May 9, 2015Young County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at May 9, 2015, 6:30 AM CDT for Young County, Texas. It was in force for 35 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 9, 2015, 6:30 AM CDT (11:30 UTC)
Expired: May 9, 2015, 7:05 AM CDT
In force: 35 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Young County, TX

The radar

The Dyess AFB radar (KDYX), 89 km from the middle of the area, began a volume at 11:29 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 11.5 hours before the alert went out and 136 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: 1762 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 903 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 12.8

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 9, 3:22 AM CDT, 3 hours 8 minutes earlier.

Area forecast discussion, May 9, 3:22 AM CDT, 3 hours 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FORT WORTH TX
322 AM CDT SAT MAY 9 2015

.DISCUSSION...

...MORE STRONG TO SEVERE THUNDERSTORMS AND FLOODING PROBLEMS THIS
WEEKEND...

AN ACTIVE WEATHER PATTERN WILL CONTINUE OVER THE REGION THROUGH
THE WEEKEND AS AN UPPER LOW OVER NORTHERN ARIZONA MOVES THROUGH
SOUTHERN COLORADO AND INTO THE CENTRAL AND NORTHERN PLAINS ON
SUNDAY NIGHT. SEVERAL SHORT WAVES WILL MOVE ACROSS NORTH/CENTRAL
TEXAS THIS WEEKEND AND PRODUCE SEVERAL ROUNDS OF STRONG TO SEVERE
CONVECTION AND AREAS OF HEAVY RAINFALL. TWO DAY RAIN TOTALS MAY
EXCEED 3 INCHES IN SOME LOCATIONS AND PRODUCE BOTH LOCALIZED
FLASH FLOODING AND LONG DURATION AREAL FLOODING. THUS...WE HAVE
EXPANDED AND EXTENDED THE CURRENT FLOOD WATCH TO COVER AREAS ALONG
AND NORTH OF A BRECKENRIDGE TO DALLAS TO GREENVILLE TO PARIS LINE
THROUGH MONDAY 7 AM.

OUR AIR MASS WILL NOT BE MUCH DIFFERENT THIS WEEKEND AS VERY
UNSTABLE AIR CONTINUES TO FEED NORTH OVER THE REGION WHILE STRONG
UPPER UPPER DYNAMICS PROVIDE FOR LARGE SCALE ASCENT. ON
SATURDAY...FORECAST SOUNDINGS SHOW ANOTHER POTENTIAL FOR
SUPERCELLS AS HODOGRAPHS SHOW SIGNIFICANT SFC-3KM HELICITY OF
200-400 M2/S2...SFC CAPE OF 2000-2500 J/KG AND 0-6KM BULK SHEAR OF
35-50 KNOTS. ON SUNDAY...THE HELICITY IS DOWN TO AROUND 250
M2/S2...WHILE SFC CAPE REMAINS AROUND 2500 J/KG AND 0-6KM BULK
SHEAR INCREASES TO 45 TO 55 KNOTS. AGAIN...THUNDERSTORMS WILL BE
CAPABLE OF LARGE HAIL AND DAMAGING WINDS...AND ANY SUPERCELL COULD
PRODUCE A TORNADO.

COME MONDAY...WE STILL THINK A COLD FRONT WILL SWING THROUGH THE
CWA AND PUSH THE CONVECTION TO THE SOUTHERN CWA. THE FRONT SHOULD
MOVE SOUTH OF THE CWA FOR TUESDAY THEN STALL TO OUR SOUTH ON
WEDNESDAY. IT SHOULD LIFT BACK NORTH ACROSS THE CWA ON THURSDAY.
THE NEARBY PROXIMITY OF THE FRONT AND UNSTABLE AIR ALONG IT AND
ABOVE IT ALONG WITH CONTINUED SOUTHWESTERLY FLOW ALOFT AND SEVERAL
SHORT WAVE TROUGHS...WILL RESULT IN DAILY CONVECTION THROUGH LATE
WEEK. ONE OF THE SHORT WAVE TROUGHS ARRIVES TUESDAY AND ANOTHER
ONE ON WEDNESDAY AFTERNOON AND NIGHT. A THIRD ARRIVES FOR FRIDAY.
THUS...CONVECTION SHOULD BE A DAILY EVENT FOR MUCH OF THE CWA
TUESDAY THROUGH THURSDAY...BUT FORECAST SOUNDING SHOW THE AIR
MASS LESS UNSTABLE AND NEARLY MOIST ADIABATIC WITH HIGH PWATS
VALUES WHICH WOULD LIMIT OUR SEVERE POTENTIAL BUT INCREASE THE
POTENTIAL FOR HEAVY DOWNPOURS. COME FRIDAY THE AIR MASS BECOMES
MORE UNSTABLE WITH CAPE RISING ABOVE 2000J/KG.  75

&&

.AVIATION...
/ISSUED 1139 PM CDT FRI MAY 8 2015/
/06Z TAFS/

WE ARE STILL WATCHING ISOLATED TO SCATTERED...STRONG TO SEVERE
STORMS CONTINUING ALONG AND NORTH OF I-20. THIS ACTIVITY 'MAY'
AFFECT DFW AIRPORTS BETWEEN MIDNIGHT AND SUNRISE...THOUGH HIGH RES
MODELS HAVE REALLY STRUGGLED THE PAST 72 HRS WITH EVOLUTION AND
TIMING. I DID REMOVE THE TEMPO GROUP FOR -TSRA AROUND MIDNIGHT...
SINCE STORMS ARE A GOOD 2-3 HRS AWAY NEAR KBKD AND K0F2.

ANOTHER HOUR OR TWO OF VFR CIGS WILL PREVAIL...BEFORE MVFR CIGS
RETURN AND REMAIN THROUGH MUCH OF THE MORNING SATURDAY. VFR
CONDITIONS WILL RETURN SATURDAY AFTERNOON. OTHERWISE...SOUTH-
SOUTHEAST WINDS WILL PREVAIL AT 10-15 KTS...WITH OCCASIONAL HIGHER
GUSTS. GUSTS MAY BE VARIABLE IN AND NEAR STORMS.    05/

&&

.PRELIMINARY POINT TEMPS/POPS...
DALLAS-FT. WORTH, TX  81  69  80  64  77 /  70  60  80  80  30
WACO, TX              84  69  82  66  80 /  60  50  80  80  60
PARIS, TX             80  69  79  64  77 /  60  60  80  80  40
DENTON, TX            79  67  78  61  75 /  70  60  80  80  20
MCKINNEY, TX          80  67  79  63  76 /  70  60  80  80  30
DALLAS, TX            81  69  80  64  77 /  70  60  80  80  30
TERRELL, TX           81  70  81  66  79 /  60  60  80  80  50
CORSICANA, TX         83  71  82  67  80 /  60  40  70  80  60
TEMPLE, TX            85  70  83  66  81 /  60  40  70  80  60
MINERAL WELLS, TX     81  67  78  61  74 /  60  60  80  60  20

&&

.FWD WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH MONDAY MORNING FOR TXZ105-115>120.

FLASH FLOOD WATCH THROUGH MONDAY MORNING FOR TXZ091>095-100>104.

&&

/75

Hazardous weather outlook, May 9, 4:07 AM CDT, 2 hours 23 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
407 AM CDT SAT MAY 9 2015

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-101130-
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN-
HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS-
ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL-
JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO-
FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE-
LEON-MILAM-ROBERTSON-
407 AM CDT SAT MAY 9 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT.
THERE IS A CHANCE OF THUNDERSTORMS ACROSS ALL OF NORTH AND CENTRAL
TEXAS TODAY AND TODAY. SOME STORMS ARE EXPECTED TO BECOME
SEVERE THIS AFTERNOON AND EVENING...CAPABLE OF PRODUCING LARGE
HAIL...DAMAGING WINDS AND ISOLATED TORNADOES. IN ADDITION...
HEAVY RAINFALL MAY RESULT IN FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
THERE IS A CHANCE OF THUNDERSTORMS ACROSS ALL OF NORTH AND
CENTRAL TEXAS SUNDAY THROUGH FRIDAY. THE BEST CHANCES OF SEVERE
WEATHER DURING THIS PERIOD WILL BE ON SUNDAY WHEN SOME STORMS WILL
BE CAPABLE OF PRODUCING LARGE HAIL...DAMAGING WINDS AND ISOLATED
TORNADOES. FLASH FLOODING WILL ALSO BE POSSIBLE THROUGH SUNDAY
NIGHT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE REQUESTED THIS AFTERNOON AND EVENING
ACROSS NORTH AND CENTRAL TEXAS.

In the hours before

Local storm report, May 9, 1:35 AM CDT, 4 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
135 AM CDT SAT MAY 09 2015

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

1130 PM     FLASH FLOOD      BRECKENRIDGE            32.75N  98.90W
05/08/2015                   STEPHENS           TX   BROADCAST MEDIA

            THREE HOMES FLOODED

Local storm report, May 9, 1:36 AM CDT, 4 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
136 AM CDT SAT MAY 09 2015

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

1120 PM     HAIL             BRECKENRIDGE            32.75N  98.90W
05/08/2015  E1.75 INCH       STEPHENS           TX   LAW ENFORCEMENT

Local storm report, May 9, 1:39 AM CDT, 4 hours 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
139 AM CDT SAT MAY 09 2015

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

0136 AM     FLASH FLOOD      3 E BRECKENRIDGE        32.75N  98.85W
05/09/2015                   STEPHENS           TX   LAW ENFORCEMENT

            HWY 180 EAST OF BRECKENRIDGE PARTIALLY CLOSED DUE TO
            WATER ON THE ROAD.

Local storm report, May 9, 1:40 AM CDT, 4 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
140 AM CDT SAT MAY 09 2015

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

1120 PM     FLASH FLOOD      4 SE BRECKENRIDGE       32.71N  98.85W
05/08/2015                   STEPHENS           TX   LAW ENFORCEMENT

            FM207 WAS CLOSED DUE TO HIGH WATER

Special weather statement, May 9, 5:46 AM CDT, 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
546 AM CDT SAT MAY 9 2015

TXZ100-115-091130-
STEPHENS TX-YOUNG TX-
546 AM CDT SAT MAY 9 2015

...SIGNIFICANT WEATHER ADVISORY FOR YOUNG AND NORTHERN STEPHENS
COUNTIES UNTIL 630 AM CDT...

AT 545 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR CRYSTAL FALLS...OR 10 MILES NORTHWEST OF BRECKENRIDGE...MOVING
NORTHEAST AT 45 MPH.

DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
GRAHAM...BRECKENRIDGE...OLNEY...CRYSTAL FALLS...NEWCASTLE AND US-
180 NEAR THE SHACKELFORD-STEPHENS COUNTY LINE.

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.

&&

LAT...LON 3295 9910 3296 9895 3340 9895 3340 9842
      3295 9843 3295 9857 3287 9858 3265 9910
TIME...MOT...LOC 1045Z 239DEG 37KT 3291 9898

DUNN

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 8, 7:05 PM CDT	Flash Flood Warning	FWD	Fannin, Lamar	3 hr
May 8, 7:05 PM CDT	Tornado Warning	FWD	Young	43 min
May 8, 7:06 PM CDT	Severe Thunderstorm Warning	FWD	Jack	39 min
May 8, 7:10 PM CDT	Tornado Warning	FWD	Montague	50 min
May 8, 7:17 PM CDT	Severe Thunderstorm Warning	FWD	Stephens, Young	58 min
May 8, 7:30 PM CDT	Severe Thunderstorm Warning	FWD	Montague	60 min
May 8, 7:38 PM CDT	Areal Flood Advisory	FWD	Anderson, Freestone, Henderson, Navarro	3 hr
May 8, 7:44 PM CDT	Flash Flood Warning	FWD	Young	3 hr
May 8, 7:48 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Stephens, Young	57 min
May 8, 7:54 PM CDT	Tornado Warning	FWD	Montague	15 min
May 8, 8:28 PM CDT	Severe Thunderstorm Warning	FWD	Montague	47 min
May 8, 8:35 PM CDT	Severe Thunderstorm Warning	FWD	Cooke	55 min
May 8, 8:46 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Stephens, Young	59 min
May 8, 8:49 PM CDT	Flash Flood Warning	FWD	Stephens	3 hr
May 8, 9:34 PM CDT	Flash Flood Warning	FWD	Cooke	3 hr
May 8, 9:43 PM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto, Stephens, Young	62 min
May 8, 9:57 PM CDT	Special Weather Statement	FWD	Wise	48 min
May 8, 10:07 PM CDT	Areal Flood Warning	FWD	Montague	3 hr
May 8, 10:25 PM CDT	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Young	26 min
May 8, 10:32 PM CDT	Areal Flood Warning	FWD	Cooke	3 hr
May 8, 10:33 PM CDT	Severe Thunderstorm Warning	FWD	Grayson	42 min
May 8, 10:36 PM CDT	Areal Flood Warning	FWD	Young	3 hr
May 8, 10:43 PM CDT	Severe Thunderstorm Warning	FWD	Stephens	62 min
May 8, 11:43 PM CDT	Severe Thunderstorm Warning	FWD	Stephens	47 min
May 8, 11:47 PM CDT	Special Weather Statement	FWD	Lamar	43 min
May 8, 11:49 PM CDT	Flash Flood Warning	FWD	Stephens	3 hr
May 9, 12:14 AM CDT	Severe Thunderstorm Warning	FWD	Palo Pinto	39 min
May 9, 3:08 AM CDT	Areal Flood Warning	FWD	Stephens	6 hr
May 9, 5:46 AM CDT	Special Weather Statement	FWD	Young	44 min
May 9, 6:43 AM CDT	Special Weather Statement	FWD	Jack	47 min
May 9, 6:54 AM CDT	Severe Thunderstorm Warning	FWD	Jack	50 min
May 9, 7:37 AM CDT	Special Weather Statement	FWD	Montague	38 min
May 9, 8:09 AM CDT	Special Weather Statement	FWD	Montague	51 min
May 9, 8:33 AM CDT	Areal Flood Advisory	FWD	Montague	3 hr
May 9, 8:37 AM CDT	River Flood Warning	FWD	Hunt	44 hr
May 9, 9:07 AM CDT	Special Weather Statement	FWD	Wise	23 min
May 9, 9:14 AM CDT	Areal Flood Advisory	FWD	Wise	2 hr
May 9, 9:20 AM CDT	River Flood Warning	FWD	Young	28 hr
May 9, 9:37 AM CDT	River Flood Warning	FWD	Dallas	27 hr
May 9, 9:37 AM CDT	River Flood Warning	FWD	Collin	3 days
May 9, 9:37 AM CDT	River Flood Warning	FWD	Henderson, Navarro	5 days
May 9, 9:49 AM CDT	Special Weather Statement	FWD	Denton	41 min
May 9, 10:06 AM CDT	Areal Flood Advisory	FWD	Cooke, Denton	114 min
May 9, 10:23 AM CDT	Special Weather Statement	FWD	Collin, Denton, Grayson	67 min
May 9, 10:26 AM CDT	Flash Flood Warning	FWD	Collin, Cooke, Denton, Grayson	6 hr
May 9, 10:31 AM CDT	Areal Flood Warning	FWD	Wise	119 min
May 9, 11:44 AM CDT	Special Weather Statement	FWD	Fannin	61 min
May 9, 12:11 PM CDT	Flash Flood Warning	FWD	Fannin	3 hr
May 9, 12:19 PM CDT	Special Weather Statement	FWD	Fannin, Lamar	41 min
May 9, 12:25 PM CDT	Areal Flood Warning	FWD	Wise	3 hr
May 9, 12:45 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Lamar	45 min
May 9, 1:19 PM CDT	Special Weather Statement	FWD	Grayson	26 min
May 9, 1:41 PM CDT	Special Weather Statement	FWD	Grayson	34 min
May 9, 1:49 PM CDT	Severe Thunderstorm Warning	FWD	Fannin, Lamar	56 min
May 9, 2:06 PM CDT	Special Weather Statement	FWD	Grayson	39 min
May 9, 2:35 PM CDT	Areal Flood Advisory	FWD	Lamar	115 min
May 9, 3:14 PM CDT	Areal Flood Warning	FWD	Fannin	3 hr
May 9, 3:18 PM CDT	Areal Flood Advisory	FWD	Wise	117 min
May 9, 3:22 PM CDT	River Flood Warning	FWD	Collin	51 hr
May 9, 3:22 PM CDT	River Flood Warning	FWD	Denton	17 hr
May 9, 3:44 PM CDT	Severe Thunderstorm Warning	FWD	Eastland, Stephens	61 min
May 9, 4:26 PM CDT	Areal Flood Warning	FWD	Lamar	3 hr
May 9, 4:28 PM CDT	Tornado Warning	FWD	Eastland	47 min
May 9, 4:34 PM CDT	Areal Flood Warning	FWD	Collin, Denton	3 hr
May 9, 4:41 PM CDT	Severe Thunderstorm Warning	FWD	Young	64 min
May 9, 4:41 PM CDT	Severe Thunderstorm Warning	FWD	Eastland	64 min
May 9, 4:46 PM CDT	Tornado Warning Tornado observed	FWD	Eastland	29 min
May 9, 4:47 PM CDT	Special Weather Statement	FWD	Cooke	43 min
May 9, 4:55 PM CDT	Tornado Warning Tornado observed	FWD	Cooke	35 min
May 9, 5:20 PM CDT	Severe Thunderstorm Warning	FWD	Cooke, Grayson	55 min
May 9, 5:28 PM CDT	Tornado Warning	FWD	Delta, Hopkins, Lamar	20 min
May 9, 5:39 PM CDT	Flash Flood Warning	FWD	Eastland	6 hr
May 9, 5:42 PM CDT	Severe Thunderstorm Warning	FWD	Young	63 min
May 9, 5:42 PM CDT	Tornado Warning	FWD	Eastland	33 min
May 9, 5:42 PM CDT	Tornado Warning	FWD	Cooke	22 min
May 9, 5:44 PM CDT	Severe Thunderstorm Warning	FWD	Eastland	61 min
May 9, 5:58 PM CDT	Tornado Warning	FWD	Young	32 min
May 9, 5:59 PM CDT	Flash Flood Warning	FWD	Young	2 hr
May 9, 6:06 PM CDT	Tornado Warning	FWD	Grayson	24 min
May 9, 6:09 PM CDT	Severe Thunderstorm Warning	FWD	Eastland, Erath, Palo Pinto	66 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning in 2015

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.