Alert archive / Texas / Flash Flood Watches in 2007

Flash Flood Watch 11, NWS Brownsville, TX

July 25, 20078 counties in Texas

NWS Brownsville, TX issued this flash flood watch at Jul 25, 2007, 4:34 AM CDT for 8 counties in Texas. It was in force for 4 days.

The area

The counties it named.

The facts

Issued: Jul 25, 2007, 4:34 AM CDT (09:34 UTC)
Expired: Jul 28, 2007, 4:46 PM CDT
In force: 4 days
Issued by: NWS Brownsville, TX
Flood severity: None

Counties Brooks County, TX, Cameron County, TX, Hidalgo County, TX, Jim Hogg County, TX, Kenedy County, TX, Starr County, TX, Willacy County, TX, Zapata County, TX

The radar

The Brownsville radar (KBRO), 118 km from the middle of the area, began a volume at 09:34 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

Corpus Christi, TX (KCRP), launched 00:00Z, 9.6 hours before the alert went out and 143 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: 2331 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 874 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: -1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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 Brownsville, TX wrote its last area forecast discussion before this flash flood watch went out at Jul 25, 4:00 AM CDT, 34 minutes earlier.

Area forecast discussion, Jul 25, 4:00 AM CDT, 34 minutes before

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Hazardous weather outlook, Jul 24, 11:25 PM CDT, 5 hours 9 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 24, 10:09 PM CDT	Flash Flood Warning	BRO	Jim Hogg	2 hr
Jul 24, 10:50 PM CDT	Flash Flood Warning	BRO	Zapata	3 hr
Jul 25, 1:25 PM CDT	Flash Flood Warning	BRO	Brooks	95 min
Jul 25, 2:55 PM CDT	Flash Flood Warning	BRO	Brooks, Hidalgo	95 min
Jul 25, 4:28 PM CDT	Flash Flood Warning	BRO	Brooks, Hidalgo	92 min
Jul 25, 6:06 PM CDT	Flash Flood Warning	BRO	Hidalgo, Starr	84 min

Nearby

Flash Flood Watches in Texas, 2007 Every flash flood watch in 2007

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.