Alert archive / Texas / Flash Flood Warnings in 2009

Flash Flood Warning 66, NWS Fort Worth, TX

September 11, 2009Bell County, Texas

NWS Fort Worth, TX issued this flash flood warning at Sep 11, 2009, 3:40 PM CDT for Bell County, Texas. It was in force for 6 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: Sep 11, 2009, 3:40 PM CDT (20:40 UTC)
Expired: Sep 11, 2009, 9:45 PM CDT
In force: 6 hr
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Flood severity: None

County Bell County, TX

The radar

The Ft Hood radar (KGRK), 36 km from the middle of the area, began a volume at 20:42 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, 8.7 hours before the alert went out and 200 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: 1053 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 497 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 58 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 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 Sep 11, 3:36 PM CDT, 4 minutes earlier.

Area forecast discussion, Sep 11, 3:36 PM CDT, 4 minutes before

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Hazardous weather outlook, Sep 11, 3:25 PM CDT, 15 minutes before

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In the hours before

Local storm report, Sep 11, 12:12 PM CDT, 3 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1212 PM CDT FRI SEP 11 2009

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

1211 PM     FLASH FLOOD      SALADO                  30.93N  97.53W
09/11/2009                   BELL               TX   BROADCAST MEDIA

            REPORTS OF CAR STUCK IN WATER NEAR MILL CREEK COUNTRY
            CLUB IN SALADO.

Local storm report, Sep 11, 12:55 PM CDT, 2 hours 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FORT WORTH TX
1255 PM CDT FRI SEP 11 2009

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

1255 PM     FLASH FLOOD      SALADO                  30.93N  97.53W
09/11/2009                   BELL               TX   EMERGENCY MNGR

            SALADO RESIDENTS NEAR CREEK ARE BEING PREPARED TO
            EVACUATE

Local storm report, Sep 11, 1:23 PM CDT, 2 hours 17 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 10, 11:11 PM CDT	Areal Flood Advisory	FWD	McLennan	2 hr
Sep 10, 11:31 PM CDT	Areal Flood Advisory	FWD	Bell	119 min
Sep 11, 3:49 AM CDT	Flash Flood Watch	FWD	Anderson, Bell, Bosque, Collin, Comanche, Cooke and 40 more	4 days
Sep 11, 10:08 AM CDT	Areal Flood Advisory	FWD	Bell	2 hr
Sep 11, 11:33 AM CDT	Flash Flood Warning	FWD	Bell	117 min
Sep 11, 1:03 PM CDT	Flash Flood Warning	FWD	Bell	3 hr
Sep 11, 3:50 PM CDT	Areal Flood Advisory	FWD	McLennan	3 hr
Sep 11, 5:45 PM CDT	Areal Flood Advisory	FWD	Collin	3 hr
Sep 11, 6:31 PM CDT	Areal Flood Advisory	FWD	Dallas	3 hr
Sep 11, 6:47 PM CDT	Special Weather Statement	FWD	Tarrant	28 min
Sep 11, 6:50 PM CDT	Areal Flood Advisory	FWD	Denton	3 hr
Sep 11, 6:52 PM CDT	Areal Flood Advisory	FWD	Tarrant	3 hr

Nearby

Flash Flood Warnings in Texas, 2009 Every flash flood warning in 2009

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.