Alert archive / Texas / Flash Flood Watches in 2007

Flash Flood Watch 12, NWS Midland/Odessa, TX

July 31, 2007Pecos County, Terrell County, Texas; Eddy County, New Mexico

NWS Midland/Odessa, TX issued this flash flood watch at Jul 31, 2007, 4:48 AM CDT for Pecos County, Terrell County, Texas; Eddy County, New Mexico. It took effect at Jul 31, 2007, 7:00 AM CDT. It was in force for 22 hr.

The area

The counties it named.

The facts

Issued: Jul 31, 2007, 4:48 AM CDT (09:48 UTC)
In effect from: Jul 31, 2007, 7:00 AM CDT
Expired: Aug 1, 2007, 5:00 AM CDT
In force: 22 hr
Issued by: NWS Midland/Odessa, TX
Flood severity: None

Counties Eddy County, NM, Pecos County, TX, Terrell County, TX

The radar

The Midland/Odessa radar (KMAF), 118 km from the middle of the area, began a volume at 09:49 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, 9.8 hours before the alert went out and 290 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: 1228 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 598 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 67 m²/s²
0-3 km storm-relative helicity: 90 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 Midland/Odessa, TX wrote its last area forecast discussion before this flash flood watch went out at Jul 30, 3:00 PM CDT, 13 hours 48 minutes earlier.

Area forecast discussion, Jul 30, 3:00 PM CDT, 13 hours 48 minutes before

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Hazardous weather outlook, Jul 30, 11:41 AM CDT, 17 hours 7 minutes before

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The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 31, 5:31 AM CDT	River Flood Warning	MAF	Brewster	3 hr
Jul 31, 4:55 PM CDT	River Flood Warning	MAF	Presidio	18 hr

Nearby

Flash Flood Watches in Texas, 2007 Flash Flood Watches in New Mexico, 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.