Alert archive / Texas / Flash Flood Warnings in 2012

Flash Flood Warning 8, NWS Amarillo, TX

September 5, 2012Hutchinson County, Texas

NWS Amarillo, TX issued this flash flood warning at Sep 5, 2012, 5:56 PM CDT for Hutchinson 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: Sep 5, 2012, 5:56 PM CDT (22:56 UTC)
Expired: Sep 5, 2012, 8:22 PM CDT
In force: 2 hr
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Flood severity: None

County Hutchinson County, TX

The radar

The Amarillo radar (KAMA), 52 km from the middle of the area, began a volume at 22:57 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

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.9 hours before the alert went out and 52 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: 1415 J/kg
Mixed-layer CIN: -182 J/kg
Mixed-layer LCL: 1651 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

254 
WGUS54 KAMA 052256
FFWAMA
TXC233-060200-
/O.NEW.KAMA.FF.W.0008.120905T2256Z-120906T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
556 PM CDT WED SEP 5 2012

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHWESTERN HUTCHINSON COUNTY IN THE PANHANDLE OF TEXAS...
  THIS INCLUDES THE CITY OF BORGER...

* UNTIL 900 PM CDT

* AT 555 PM CDT...DOPPLER RADAR SHOWED A THUNDERSTORM PRODUCING      
  RAINFALL RATES IN EXCESS OF ONE INCH PER HOUR OVER THE WARNED      
  AREA. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BORGER AND 
  FRITCH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. MOVE TO HIGHER GROUND.

TO REPORT FLOODING...PLEASE CALL THE NATIONAL WEATHER SERVICE AT 8 0
6 3 3 5 1 1 2 1.

&&

LAT...LON 3568 10162 3572 10134 3563 10133 3563 10162

$$

KB

1 follow-up statement

018 
WGUS74 KAMA 060122
FFSAMA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
822 PM CDT WED SEP 5 2012

TXC233-060130-
/O.CAN.KAMA.FF.W.0008.000000T0000Z-120906T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HUTCHINSON TX-
822 PM CDT WED SEP 5 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN
HUTCHINSON COUNTY...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED RAINFALL HAS ENDED 
ACROSS THE WARNED AREA...AND THE FLASH FLOOD THREAT HAS DIMINISHED. 
SOME MINOR FLOODING MAY CONTINUE...BUT THE THREAT OF SERIOUS 
FLOODING HAS ENDED. THUS...THE FLASH FLOOD WARNING HAS BEEN 
CANCELLED.

LAT...LON 3568 10162 3572 10134 3563 10133 3563 10162

$$

KB

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 5, 3:43 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter, Randall	47 min
Sep 5, 3:55 PM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	65 min
Sep 5, 4:00 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	45 min
Sep 5, 4:06 PM CDT	Areal Flood Advisory	AMA	Armstrong	3 hr
Sep 5, 4:16 PM CDT	Flash Flood Warning	AMA	Potter, Randall	3 hr
Sep 5, 4:34 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter	41 min
Sep 5, 4:42 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	44 min
Sep 5, 4:47 PM CDT	Severe Thunderstorm Warning	AMA	Oldham, Potter	33 min
Sep 5, 4:55 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Donley	39 min
Sep 5, 5:01 PM CDT	Severe Thunderstorm Warning	AMA	Carson	23 min
Sep 5, 5:03 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hutchinson, Moore, Potter	57 min
Sep 5, 5:14 PM CDT	Areal Flood Advisory	AMA	Deaf Smith	2 hr
Sep 5, 6:11 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson, Moore	64 min
Sep 5, 6:46 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hutchinson, Roberts	59 min

Nearby

Flash Flood Warnings in Texas, 2012 Every flash flood warning in 2012

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.