Alert archive / Texas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 190, NWS Fort Worth, TX

July 14, 2014Collin County, Denton County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Jul 14, 2014, 2:39 PM CDT for Collin County, Denton County, Texas. It was in force for 51 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
Jul 14, 2014, 2:39 PM CDT (19:39 UTC)
Expired
Jul 14, 2014, 3:30 PM CDT
In force
51 min
Issued by
NWS Fort Worth, TX
Area
Storm-based polygon

Counties Collin County, TX, Denton County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 82 km from the middle of the area, began a volume at 19:40 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

Norman, OK (KOUN), launched 12:00Z, 7.7 hours before the alert went out and 231 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-pSkew-T log-p diagram, Norman, OK at 12:00Z on 2014-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 660 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 12:00Z on 2014-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
660 J/kg
Mixed-layer CIN
-193 J/kg
Mixed-layer LCL
1526 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jul 14, 12:28 PM CDT, 2 hours 11 minutes earlier.

Area forecast discussion, Jul 14, 12:28 PM CDT, 2 hours 11 minutes before
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Hazardous weather outlook, Jul 14, 2:16 PM CDT, 23 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
216 PM CDT MON JUL 14 2014

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-151145-
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-
216 PM CDT MON JUL 14 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...THROUGH TONIGHT.

THERE IS A CHANCE FOR THUNDERSTORMS ACROSS THE NORTHERN HALF OF
NORTH TEXAS THROUGH THIS EVENING...SPREADING INTO CENTRAL TEXAS
OVERNIGHT. SOME STORMS COULD BE STRONG TO SEVERE...PRODUCING
DAMAGING DOWNBURST WINDS. LOCALLY HEAVY RAINFALL AND FREQUENT
LIGHTNING ARE EXPECTED AS WELL.

THUNDERSTORM CHANCES WILL SPREAD SOUTH ACROSS THE REGION THIS
EVENING AND TONIGHT. SOME STORMS THIS EVENING COULD BE STRONG
PRODUCING GUSTY WINDS. LOCALLY HEAVY RAINFALL AND FREQUENT
LIGHTNING ARE EXPECTED AS WELL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THERE IS A CHANCE FOR THUNDERSTORMS ACROSS CENTRAL TEXAS TUESDAY
AND TUESDAY NIGHT...AND ACROSS ALL OF NORTH TEXAS WEDNESDAY
THROUGH FRIDAY. THE BEST THUNDERSTORM CHANCES ARE EXPECTED
WEDNESDAY THROUGH THURSDAY. SOME LOCATIONS IN NORTH TEXAS MAY
RECEIVE SIGNIFICANT RAINFALL THROUGH FRIDAY...AND LOCALIZED
FLOODING PROBLEMS MAY OCCUR. WIDESPREAD SEVERE WEATHER IS NOT
EXPECTED BUT A FEW SEVERE STORMS ARE POSSIBLE WEDNESDAY AND
THURSDAY AFTERNOONS. HOWEVER...ANY STORMS THIS WEEK MAY BE
CAPABLE OF PRODUCING GUSTY WINDS.

THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS ON SATURDAY SOUTHEAST
OF A LINE FROM SULPHUR SPRINGS TO WACO TO KILLEEN.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 14, 2:17 PM CDT, 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
217 PM CDT MON JUL 14 2014

TXZ104-141945-
COLLIN TX-
217 PM CDT MON JUL 14 2014

...SIGNIFICANT WEATHER ADVISORY FOR...
  CENTRAL COLLIN COUNTY

AT 217 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 3 MILES NORTH OF MCKINNEY...MOVING SOUTHEAST AT
10 MPH.

WIND GUSTS TO 50 MPH CAN BE EXPECTED FROM THIS STORM.

IF THIS STORM INTENSIFIES...A SEVERE WEATHER WARNING MAY BE NEEDED.

LAT...LON 3322 9641 3305 9658 3323 9681 3337 9667
TIME...MOT...LOC 1917Z 327DEG 8KT 3324 9666

DUNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 2:17 PM CDTSpecial Weather StatementFWDCollin28 min
Jul 14, 2:21 PM CDTSevere Thunderstorm WarningFWDCollin39 min
Jul 14, 3:26 PM CDTSevere Thunderstorm WarningFWDFannin, Hunt49 min
Jul 14, 3:54 PM CDTSevere Thunderstorm WarningFWDParker51 min
Jul 14, 4:14 PM CDTSevere Thunderstorm WarningFWDDelta, Hopkins46 min
Jul 14, 4:37 PM CDTSevere Thunderstorm WarningFWDDallas38 min
Jul 14, 5:24 PM CDTSevere Thunderstorm WarningFWDTarrant51 min
Jul 14, 5:39 PM CDTSevere Thunderstorm WarningFWDTarrant21 min
Jul 14, 6:47 PM CDTSpecial Weather StatementFWDDallas28 min

Nearby

Severe Thunderstorm Warnings in Texas, 2014Every severe thunderstorm warning in 2014

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.