Alert archive / Texas / Flash Flood Watches in 2015

Flash Flood Watch 4, NWS Fort Worth, TX

May 7, 201530 counties in Texas

NWS Fort Worth, TX issued this flash flood watch at May 7, 2015, 3:26 PM CDT for 30 counties in Texas. It was in force for 3 days.

The area

The counties it named.

The facts

Issued
May 7, 2015, 3:26 PM CDT (20:26 UTC)
Expired
May 11, 2015, 12:30 AM CDT
In force
3 days
Issued by
NWS Fort Worth, TX
Flood severity
None
All 30 counties

Bosque County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Rockwall County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Wise County, TX, Young County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 28 km from the middle of the area, began a volume at 20:29 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 12:00Z, 8.4 hours before the alert went out and 1 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, Fort Worth, TX at 12:00Z on 2015-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 656 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, Fort Worth, TX at 12:00Z on 2015-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 191 square meters per square second.193958Sfc1 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
656 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
632 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
191 m²/s²
0-3 km storm-relative helicity
284 m²/s²
Significant tornado parameter
0.6
Supercell composite
5.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at May 7, 12:43 PM CDT, 2 hours 43 minutes earlier.

Area forecast discussion, May 7, 12:43 PM CDT, 2 hours 43 minutes before
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Hazardous weather outlook, May 7, 1:05 PM CDT, 2 hours 21 minutes before
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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 10:46 PM CDTSevere Thunderstorm WarningFWDYoung48 min
May 6, 11:06 PM CDTTornado WarningFWDMontague24 min
May 6, 11:16 PM CDTTornado WarningFWDYoung18 min
May 6, 11:25 PM CDTSevere Thunderstorm WarningFWDMontague65 min
May 7, 12:05 AM CDTSevere Thunderstorm WarningFWDJack, Wise55 min
May 7, 12:28 AM CDTSevere Thunderstorm WarningFWDMontague62 min
May 7, 12:57 AM CDTSevere Thunderstorm WarningFWDJack, Wise63 min
May 7, 1:00 AM CDTFlash Flood WarningFWDJack, Montague6 hr
May 7, 1:27 AM CDTSevere Thunderstorm WarningFWDCooke, Montague63 min
May 7, 1:47 AM CDTFlash Flood WatchFWDCollin, Cooke, Denton, Grayson, Jack, Montague and 2 more4 hr
May 7, 2:40 AM CDTAreal Flood AdvisoryFWDCooke5 hr
May 7, 3:37 AM CDTAreal Flood AdvisoryFWDGrayson4 hr
May 7, 3:54 AM CDTAreal Flood AdvisoryFWDDenton3 hr
May 7, 4:44 AM CDTAreal Flood AdvisoryFWDFannin3 hr
May 7, 3:45 PM CDTSevere Thunderstorm WarningFWDYoung60 min
May 7, 4:08 PM CDTRiver Flood WarningFWDCollin34 hr
May 7, 4:08 PM CDTRiver Flood WarningFWDCollin34 hr
May 7, 4:22 PM CDTSpecial Weather StatementFWDJack38 min
May 7, 4:33 PM CDTAreal Flood AdvisoryFWDYoung3 hr
May 7, 4:38 PM CDTSevere Thunderstorm WarningFWDJack, Young67 min
May 7, 4:55 PM CDTAreal Flood AdvisoryFWDJack3 hr
May 7, 5:05 PM CDTSpecial Weather StatementFWDParker40 min
May 7, 5:13 PM CDTSevere Thunderstorm WarningFWDParker, Wise62 min
May 7, 5:23 PM CDTSpecial Weather StatementFWDCooke, Montague52 min
May 7, 5:25 PM CDTFlash Flood WarningFWDJack6 hr
May 7, 5:40 PM CDTTornado WarningFWDJack35 min
May 7, 6:06 PM CDTFlash Flood WarningFWDMontague3 hr
May 7, 6:11 PM CDTTornado WarningFWDWise14 min
May 7, 6:15 PM CDTSevere Thunderstorm WarningFWDJack, Montague, Wise60 min
May 7, 6:25 PM CDTSevere Thunderstorm WarningFWDDenton, Wise65 min
May 7, 6:45 PM CDTTornado Warning Tornado observedFWDDenton, Wise30 min
May 7, 6:52 PM CDTSpecial Weather StatementFWDStephens, Young38 min

Nearby

Flash Flood Watches in Texas, 2015Every flash flood watch 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.