Alert archive / Texas / Flash Flood Watches in 2016

Flash Flood Watch 6, NWS Fort Worth, TX

August 17, 201612 counties in Texas

NWS Fort Worth, TX issued this flash flood watch at Aug 17, 2016, 3:51 AM CDT for 12 counties in Texas. It took effect at Aug 17, 2016, 4:00 AM CDT. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Aug 17, 2016, 3:51 AM CDT (08:51 UTC)
In effect from
Aug 17, 2016, 4:00 AM CDT
Expired
Aug 18, 2016, 3:45 AM CDT
In force
24 hr
Issued by
NWS Fort Worth, TX
Flood severity
None

Counties Bell County, TX, Bosque County, TX, Coryell County, TX, Ellis County, TX, Falls County, TX, Hill County, TX, Johnson County, TX, Lampasas County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Navarro County, TX

The radar

The Ft Hood radar (KGRK), 101 km from the middle of the area, began a volume at 08:54 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, 8.9 hours before the alert went out and 135 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 00:00Z on 2016-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 50 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 00:00Z on 2016-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 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
50 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
987 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
-11 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 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 Aug 16, 11:43 PM CDT, 4 hours 8 minutes earlier.

Area forecast discussion, Aug 16, 11:43 PM CDT, 4 hours 8 minutes before
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Hazardous weather outlook, Aug 17, 3:50 AM CDT, 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
350 AM CDT WED AUG 17 2016

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-180900-
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-
350 AM CDT WED AUG 17 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL TEXAS.

.DAY ONE...TODAY AND TONIGHT.
ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS NEARLY
ALL OF NORTH AND CENTRAL TEXAS BOTH TODAY AND TONIGHT. WHILE
WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...HEAVY RAIN MAY RESULT
IN INSTANCES OF FLASH FLOODING...ESPECIALLY FOR AREAS ALONG AND
SOUTH OF A LAMPASAS TO WACO TO MARLIN LINE.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
THE CHANCE FOR THUNDERSTORMS WILL CONTINUE THROUGH TUESDAY ACROSS
ALL OF NORTH AND CENTRAL TEXAS. THE SEVERE WEATHER THREAT APPEARS
LOW DURING THIS TIME FRAME. AMPLE AMOUNTS OF MOISTURE
HOWEVER...WILL YIELD A THREAT FOR FLOODING.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME...BUT TIMELY REPORTS
OF FLASH FLOODING ARE APPRECIATED.

24-BAIN

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 2:05 AM CDTAreal Flood AdvisoryFWDLampasas4 hr
Aug 17, 4:49 AM CDTAreal Flood AdvisoryFWDCoryell, Hamilton5 hr
Aug 17, 5:20 AM CDTAreal Flood AdvisoryFWDBell3 hr
Aug 17, 6:28 AM CDTFlash Flood WarningFWDBell3 hr
Aug 17, 6:54 AM CDTAreal Flood AdvisoryFWDCoryell, McLennan3 hr
Aug 17, 8:44 AM CDTAreal Flood AdvisoryFWDHill, Limestone, McLennan, Navarro3 hr
Aug 17, 9:29 AM CDTFlash Flood WarningFWDBell3 hr
Aug 17, 9:41 AM CDTAreal Flood AdvisoryFWDBosque, Coryell, Hamilton, Hill, McLennan3 hr
Aug 17, 10:22 AM CDTFlash Flood WarningFWDHill3 hr
Aug 17, 10:35 AM CDTFlash Flood WarningFWDBosque, Coryell, Hamilton3 hr
Aug 17, 11:47 AM CDTAreal Flood AdvisoryFWDBosque, Hill, Limestone, McLennan, Navarro3 hr
Aug 17, 11:52 AM CDTAreal Flood AdvisoryFWDEllis, Johnson3 hr
Aug 17, 12:29 PM CDTAreal Flood WarningFWDBell3 hr
Aug 17, 1:12 PM CDTFlash Flood WarningFWDHill, McLennan3 hr
Aug 17, 1:31 PM CDTAreal Flood WarningFWDBosque, Coryell, Hamilton3 hr
Aug 17, 2:43 PM CDTAreal Flood AdvisoryFWDLeon, Milam, Robertson3 hr
Aug 17, 2:50 PM CDTAreal Flood WarningFWDEllis85 min
Aug 17, 3:02 PM CDTAreal Flood AdvisoryFWDBell, Coryell3 hr
Aug 17, 3:30 PM CDTAreal Flood WarningFWDBell3 hr
Aug 17, 3:39 PM CDTAreal Flood AdvisoryFWDDallas3 hr

Nearby

Flash Flood Watches in Texas, 2016Every flash flood watch in 2016

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.