Alert archive / Texas / Flash Flood Watches in 2008

Flash Flood Watch 3, NWS Brownsville, TX

August 22, 20084 counties in Texas

NWS Brownsville, TX issued this flash flood watch at Aug 22, 2008, 4:16 PM CDT for 4 counties in Texas. It was in force for 45 hr.

The area

The counties it named.

The facts

Issued: Aug 22, 2008, 4:16 PM CDT (21:16 UTC)
Expired: Aug 24, 2008, 1:00 PM CDT
In force: 45 hr
Issued by: NWS Brownsville, TX
Flood severity: None

Counties Hidalgo County, TX, Jim Hogg County, TX, Starr County, TX, Zapata County, TX

The radar

The Brownsville radar (KBRO), 158 km from the middle of the area, began a volume at 21:17 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

Brownsville Intl, TX (KBRO), launched 12:00Z, 9.3 hours before the alert went out and 160 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: 3773 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 537 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 75 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 Brownsville, TX wrote its last area forecast discussion before this flash flood watch went out at Aug 22, 1:05 PM CDT, 3 hours 11 minutes earlier.

Area forecast discussion, Aug 22, 1:05 PM CDT, 3 hours 11 minutes before

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Hazardous weather outlook, Aug 22, 8:40 AM CDT, 7 hours 36 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
Aug 22, 11:35 AM CDT	Areal Flood Advisory	BRO	Brooks	55 min
Aug 22, 5:03 PM CDT	Flash Flood Warning	BRO	Starr	117 min
Aug 22, 6:05 PM CDT	Flash Flood Warning	BRO	Starr, Zapata	115 min

Nearby

Flash Flood Watches in Texas, 2008 Every flash flood watch in 2008

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.