Alert archive / Texas / Flash Flood Watches in 2007

Flash Flood Watch 14, NWS Midland/Odessa, TX

August 17, 200718 counties in Texas

NWS Midland/Odessa, TX issued this flash flood watch at Aug 17, 2007, 4:26 AM CDT for 18 counties in Texas. It took effect at Aug 17, 2007, 5:00 AM CDT. It was in force for 31 hr.

The area

The counties it named.

The facts

Issued: Aug 17, 2007, 4:26 AM CDT (09:26 UTC)
In effect from: Aug 17, 2007, 5:00 AM CDT
Expired: Aug 18, 2007, 11:35 AM CDT
In force: 31 hr
Issued by: NWS Midland/Odessa, TX
Flood severity: None

Counties Andrews County, TX, Borden County, TX, Crane County, TX, Dawson County, TX, Ector County, TX, Gaines County, TX, Glasscock County, TX, Howard County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Pecos County, TX, Reagan County, TX, Scurry County, TX, Terrell County, TX, Upton County, TX, Ward County, TX, Winkler County, TX

The radar

The Midland/Odessa radar (KMAF), 13 km from the middle of the area, began a volume at 09:30 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

Del Rio, TX (KDRT), launched 00:00Z, 9.4 hours before the alert went out and 305 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: 224 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1678 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: -33 m²/s²
0-3 km storm-relative helicity: 20 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 Midland/Odessa, TX wrote its last area forecast discussion before this flash flood watch went out at Aug 17, 4:25 AM CDT, 1 minute earlier.

Area forecast discussion, Aug 17, 4:25 AM CDT, 1 minute before

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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.