Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 228, NWS Fort Worth, TX

December 12, 20154 counties in Texas

NWS Fort Worth, TX issued this flash flood warning at Dec 12, 2015, 8:58 PM CST for 4 counties in Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Dec 12, 2015, 8:58 PM CST (02:58 UTC)
Expired: Dec 13, 2015, 12:00 AM CST
In force: 3 hr
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Flood severity: None

Counties Anderson County, TX, Freestone County, TX, Henderson County, TX, Leon County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 159 km from the middle of the area, began a volume at 03:00 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, 3.0 hours before the alert went out and 176 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: 374 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 699 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 296 m²/s²
0-3 km storm-relative helicity: 305 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Dec 12, 5:49 PM CST, 3 hours 9 minutes earlier.

Area forecast discussion, Dec 12, 5:49 PM CST, 3 hours 9 minutes before

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Hazardous weather outlook, Dec 12, 3:40 PM CST, 5 hours 18 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
340 PM CST SAT DEC 12 2015

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-131200-
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-
340 PM CST SAT DEC 12 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH AND CENTRAL TEXAS.

.DAY ONE...TONIGHT.

SCATTERED SHOWERS AND A FEW THUNDERSTORMS WILL CONTINUE MAINLY
EAST OF INTERSTATE 35 THROUGH LATE THIS EVENING. A FEW STORMS
COULD BECOME STRONG AND PRODUCE DAMAGING WINDS OR A BRIEF TORNADO.
IN ADDITION...LOCALIZED VERY HEAVY RAINFALL MAY CAUSE FLASH
FLOODING THROUGH LATE EVENING.

LATER TONIGHT...A LINE OF SHOWERS AND THUNDERSTORMS WILL DEVELOP
ACROSS WEST TEXAS AND MOVE EAST ACROSS THE AREA OVERNIGHT.
PORTIONS OF THIS LINE OF STORMS COULD BE STRONG AND PRODUCE
DAMAGING WINDS. A BRIEF TORNADO WILL BE POSSIBLE ALTHOUGH THE
OVERALL THREAT IS LOW. ADDITIONAL RAINFALL WITH THIS LINE OF
STORMS COULD PRODUCE SOME FLASH FLOODING DURING THE OVERNIGHT
HOURS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THUNDERSTORMS WILL END FROM WEST TO EAST DURING THE MORNING HOURS
ON SUNDAY. THERE WILL CONTINUE TO BE A THREAT FOR FLOODING AND
STRONG WINDS WITH ANY THUNDERSTORMS DURING THE MORNING HOURS. MOST
OF THIS ACTIVITY WILL BE EAST OF INTERSTATE 35.

.SPOTTER INFORMATION STATEMENT...

LIMITED SPOTTER ACTIVATION MAY BE REQUESTED THROUGH TONIGHT ACROSS
ALL OF NORTH TEXAS.

DUNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 12, 6:02 PM CST	Areal Flood Advisory	FWD	Anderson, Freestone, Henderson	3 hr
Dec 12, 6:09 PM CST	Areal Flood Advisory	FWD	Fannin, Lamar	3 hr
Dec 12, 7:05 PM CST	River Flood Warning	FWD	Hunt	44 hr
Dec 12, 7:05 PM CST	River Flood Warning	FWD	Hunt, Rockwall	42 hr
Dec 12, 7:34 PM CST	Areal Flood Advisory	FWD	Leon	3 hr
Dec 12, 7:55 PM CST	Areal Flood Advisory	FWD	Delta, Hopkins, Hunt, Rains, Van Zandt	3 hr
Dec 12, 10:10 PM CST	Special Weather Statement	FWD	Eastland, Stephens	65 min
Dec 12, 10:44 PM CST	Areal Flood Advisory	FWD	Hopkins, Rains, Van Zandt	2 hr
Dec 12, 11:14 PM CST	Special Weather Statement	FWD	Comanche, Eastland, Erath, Jack, Palo Pinto, Young	61 min
Dec 12, 11:42 PM CST	Special Weather Statement	FWD	Hamilton, Mills	48 min
Dec 12, 11:53 PM CST	Areal Flood Warning	FWD	Anderson, Freestone, Henderson, Leon, Van Zandt	6 hr
Dec 13, 12:12 AM CST	Special Weather Statement	FWD	Erath, Hood, Jack, Montague, Palo Pinto, Parker and 2 more	63 min
Dec 13, 12:30 AM CST	Special Weather Statement	FWD	Bosque, Coryell, Hamilton, Lampasas	60 min
Dec 13, 12:52 AM CST	Severe Thunderstorm Warning	FWD	Bell, Coryell, Lampasas	53 min
Dec 13, 1:05 AM CST	Special Weather Statement	FWD	Cooke, Denton, Montague, Parker, Tarrant, Wise	55 min
Dec 13, 1:09 AM CST	Special Weather Statement	FWD	Bell, Hill, Johnson, McLennan	66 min
Dec 13, 1:23 AM CST	Severe Thunderstorm Warning	FWD	Bell, Coryell	37 min
Dec 13, 1:34 AM CST	Severe Thunderstorm Warning	FWD	Denton, Tarrant	41 min
Dec 13, 1:52 AM CST	Special Weather Statement	FWD	Collin, Cooke, Dallas, Denton, Ellis, Grayson and 3 more	53 min
Dec 13, 1:55 AM CST	Special Weather Statement	FWD	Bell, Falls, Hill, McLennan, Milam	50 min
Dec 13, 2:06 AM CST	Severe Thunderstorm Warning	FWD	Dallas, Ellis, Johnson, Tarrant	54 min
Dec 13, 2:55 AM CST	Special Weather Statement	FWD	Falls, Milam, Robertson	65 min
Dec 13, 2:59 AM CST	Special Weather Statement	FWD	Collin, Dallas, Kaufman, Navarro, Rockwall	61 min
Dec 13, 3:11 AM CST	Severe Thunderstorm Warning	FWD	Milam, Robertson	64 min
Dec 13, 3:43 AM CST	Severe Thunderstorm Warning	FWD	Collin, Fannin, Hunt, Rockwall	62 min
Dec 13, 4:01 AM CST	Special Weather Statement	FWD	Rains, Van Zandt	59 min
Dec 13, 4:10 AM CST	Special Weather Statement	FWD	Rains, Van Zandt	50 min
Dec 13, 4:10 AM CST	Severe Thunderstorm Warning	FWD	Leon, Robertson	43 min
Dec 13, 4:37 AM CST	Special Weather Statement	FWD	Delta, Hopkins, Lamar, Rains	53 min
Dec 13, 4:47 AM CST	Areal Flood Advisory	FWD	Hunt, Kaufman, Rains, Van Zandt	3 hr
Dec 13, 4:53 AM CST	Special Weather Statement	FWD	Anderson, Henderson	52 min
Dec 13, 5:06 AM CST	Flash Flood Warning	FWD	Leon	3 hr
Dec 13, 5:11 AM CST	Flash Flood Warning	FWD	Henderson, Van Zandt	4 hr
Dec 13, 5:46 AM CST	Areal Flood Warning	FWD	Anderson, Freestone	5 hr
Dec 13, 7:56 AM CST	Areal Flood Warning	FWD	Leon	24 hr
Dec 13, 8:34 AM CST	River Flood Warning	FWD	Collin	22 hr
Dec 13, 8:36 AM CST	River Flood Warning	FWD	Limestone	36 hr
Dec 13, 8:36 AM CST	River Flood Warning	FWD	Leon, Robertson	5 days
Dec 13, 9:11 AM CST	Areal Flood Warning	FWD	Henderson, Van Zandt	109 min
Dec 13, 1:28 PM CST	River Flood Warning	FWD	Ellis, Kaufman	65 hr
Dec 13, 1:28 PM CST	River Flood Warning	FWD	Collin	35 hr

Nearby

Flash Flood Warnings in Texas, 2015 Every flash flood 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.