Alert archive / Texas / Flash Flood Watches in 2018

Flash Flood Watch 6, NWS Midland/Odessa, TX

October 12, 201813 counties in Texas; Eddy County, Lea County, New Mexico

NWS Midland/Odessa, TX issued this flash flood watch at Oct 12, 2018, 3:23 PM CDT for 13 counties in Texas; Eddy County, Lea County, New Mexico. It took effect at Oct 12, 2018, 7:00 PM CDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Oct 12, 2018, 3:23 PM CDT (20:23 UTC)
In effect from: Oct 12, 2018, 7:00 PM CDT
Expired: Oct 13, 2018, 10:00 AM CDT
In force: 15 hr
Issued by: NWS Midland/Odessa, TX
Flood severity: None

Counties Eddy County, NM, Lea County, NM, Andrews County, TX, Borden County, TX, Dawson County, TX, Ector County, TX, Gaines County, TX, Glasscock County, TX, Howard County, TX, Loving County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Scurry County, TX, Winkler County, TX

The radar

The Midland/Odessa radar (KMAF), 43 km from the middle of the area, began a volume at 20:26 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

Midland Regional, TX (KMAF), launched 12:00Z, 8.4 hours before the alert went out and 42 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: 166 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 564 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 209 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 Oct 12, 12:06 PM CDT, 3 hours 17 minutes earlier.

Area forecast discussion, Oct 12, 12:06 PM CDT, 3 hours 17 minutes before

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Hazardous weather outlook, Oct 12, 2:39 PM CDT, 44 minutes before

Hazardous Weather Outlook
National Weather Service Midland/Odessa TX
239 PM CDT Fri Oct 12 2018

NMZ027>029-033-034-TXZ045>048-050>053-057>063-067>070-074-075-
079>082-258-131945-
Guadalupe Mountains of Eddy County-Eddy County Plains-
Northern Lea County-Central Lea County-Southern Lea County-Gaines-
Dawson-Borden-Scurry-Andrews-Martin-Howard-Mitchell-
Van Horn and Highway 54 Corridor-Reeves County and Upper Trans Pecos-
Loving-Winkler-Ector-Midland-Glasscock-Ward-Crane-Upton-Reagan-
Davis/Apache Mountains Area-Pecos-Presidio Valley-Marfa Plateau-
Big Bend Area-Terrell-Guadalupe Mountains-
239 PM CDT Fri Oct 12 2018 /139 PM MDT Fri Oct 12 2018/

This Hazardous Weather Outlook is for portions of southeast New
Mexico, southwest Texas, and western Texas.

.DAY ONE...This Afternoon and Tonight

Thunderstorms are expected, especially overnight along and north of
Interstate 20.  Any storms that do develop will be accompanied by
frequent lightning.  A few storms could become severe, producing
large hail. Isolated tornadoes cannot be ruled out. Heavy rainfall
will result in localized flash flooding, especially in urban areas
and locations that had heavy rainfall during the past week.

A Flash Flood Watch is in effect for Southeast New Mexico and most
of West Texas north of Interstate 20.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Thunderstorm activity will continue into Saturday, with heavy
rainfall resulting in localized flash flooding, especially north of
Interstate 20 in West Texas.

A Flash Flood Watch is in effect for Southeast New Mexico and most
of West Texas north of Interstate 10 through mid morning Saturday.

Gap winds will be possible through Guadalupe Pass Sunday night and
Monday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed overnight.

This product, along with other watches, warnings, advisories,
and statements issued by the National Weather Service Office in
Midland, can be found on the internet at...
http://weather.gov/midland

44

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 12, 6:26 PM CDT	Special Weather Statement	MAF	Pecos	34 min
Oct 12, 6:38 PM CDT	Severe Thunderstorm Warning	MAF	Pecos	67 min
Oct 12, 6:53 PM CDT	Special Weather Statement	MAF	Brewster	52 min

Nearby

Flash Flood Watches in Texas, 2018 Flash Flood Watches in New Mexico, 2018 Every flash flood watch in 2018

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.