Alert archive / Texas / Flash Flood Warnings in 2011

Flash Flood Warning 5, NWS Midland/Odessa, TX

October 8, 2011Midland County, Texas

NWS Midland/Odessa, TX issued this flash flood warning at Oct 8, 2011, 4:39 AM CDT for Midland County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 8, 2011, 4:39 AM CDT (09:39 UTC)
Expired: Oct 8, 2011, 6:45 AM CDT
In force: 2 hr
Issued by: NWS Midland/Odessa, TX
Area: Storm-based polygon
Flood severity: None

County Midland County, TX

The radar

The Midland/Odessa radar (KMAF), 11 km from the middle of the area, began a volume at 09:40 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 00:00Z, 9.7 hours before the alert went out and 12 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: 493 J/kg
Mixed-layer CIN: -177 J/kg
Mixed-layer LCL: 2174 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

987 
WGUS54 KMAF 080939
FFWMAF
TXC329-081145-
/O.NEW.KMAF.FF.W.0005.111008T0939Z-111008T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
439 AM CDT SAT OCT 8 2011

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MIDLAND COUNTY IN WEST TEXAS...

* UNTIL 645 AM CDT

* AT 436 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
  A THUNDERSTORM NEAR WARFIELD...OR 6 MILES EAST OF ODESSA CAPABLE 
  OF PRODUCING FLASH FLOODING.  THIS STORM WAS MOVING NORTHEAST AT
  15 MPH.  RADAR INDICATES UP TO ONE INCH OF RAIN WILL BE POSSIBLE
  IN A SHORT TIME.

* THE THUNDERSTORM PRODUCING FLASH FLOODING WILL AFFECT THE FOLLOWING
LOCATIONS....
  COTTON FLAT...
  MIDLAND...
  VALLEY VIEW...
  GREENWOOD...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. ACT QUICKLY IF FLOODING IS OBSERVED. MOVE TO
HIGHER GROUND.

&&

LAT...LON 3207 10226 3205 10182 3167 10180 3167 10228

$$

1 follow-up statement

095 
WGUS74 KMAF 081118
FFSMAF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
618 AM CDT SAT OCT 8 2011

TXC329-081145-
/O.CON.KMAF.FF.W.0005.000000T0000Z-111008T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MIDLAND-
618 AM CDT SAT OCT 8 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM CDT FOR
MIDLAND COUNTY...

AT 613 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A THUNDERSTORM CAPABLE OF PRODUCING FLASH FLOODING.  THIS STORM
WAS LOCATED NEAR VALLEY VIEW...OR 11 MILES SOUTHEAST OF MIDLAND...MOVING
EAST AT 10 MPH.  OVER AN INCH OF RAIN FELL ACROSS PORTIONS OF MIDLAND...
LOCAL REPORTS INDICATE WATER UP TO A FOOT DEEP AT LOOP 250 AT BUSINESS 20.

THE THUNDERSTORM PRODUCING FLASH FLOODING WILL AFFECT THE FOLLOWING
LOCATIONS...VALLEY VIEW...COTTON FLAT...GREENWOOD AND SPRABERRY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. ACT QUICKLY IF FLOODING IS OBSERVED. MOVE TO
HIGHER GROUND.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3207 10226 3205 10182 3167 10180 3167 10228

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 12:19 AM CDT	Severe Thunderstorm Warning	MAF	Dawson, Martin	26 min
Oct 8, 3:37 AM CDT	Areal Flood Advisory	MAF	Ector, Midland	113 min
Oct 8, 4:47 AM CDT	Flash Flood Watch	MAF	Borden, Crane, Dawson, Ector, Glasscock, Howard and 6 more	31 hr
Oct 8, 4:52 AM CDT	Areal Flood Advisory	MAF	Martin	113 min
Oct 8, 4:55 AM CDT	Areal Flood Advisory	MAF	Crane, Upton	2 hr
Oct 8, 5:23 AM CDT	Areal Flood Advisory	MAF	Dawson	112 min
Oct 8, 5:51 AM CDT	Areal Flood Advisory	MAF	Borden, Howard	114 min
Oct 8, 6:31 AM CDT	Areal Flood Advisory	MAF	Borden, Howard, Mitchell, Scurry	119 min
Oct 8, 6:51 AM CDT	Areal Flood Advisory	MAF	Glasscock, Midland	114 min
Oct 8, 9:02 AM CDT	Areal Flood Advisory	MAF	Borden, Howard, Mitchell, Scurry	3 hr
Oct 8, 10:03 AM CDT	Areal Flood Advisory	MAF	Glasscock, Howard, Martin, Midland, Reagan, Upton	3 hr
Oct 8, 11:58 AM CDT	Areal Flood Advisory	MAF	Glasscock, Howard, Mitchell, Reagan, Scurry	3 hr
Oct 8, 1:30 PM CDT	Severe Thunderstorm Warning	MAF	Brewster, Pecos	20 min
Oct 8, 1:31 PM CDT	Severe Thunderstorm Warning	MAF	Terrell	59 min
Oct 8, 2:09 PM CDT	Severe Thunderstorm Warning	MAF	Terrell	66 min

Nearby

Flash Flood Warnings in Texas, 2011 Every flash flood warning in 2011

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.