Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 13, NWS Amarillo, TX

May 27, 2015Armstrong County, Randall County, Texas

NWS Amarillo, TX issued this flash flood warning at May 27, 2015, 10:29 PM CDT for Armstrong County, Randall County, Texas. It was in force for 6 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: May 27, 2015, 10:29 PM CDT (03:29 UTC)
Expired: May 28, 2015, 4:30 AM CDT
In force: 6 hr
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Flood severity: None

Counties Armstrong County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 40 km from the middle of the area, began a volume at 03:29 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, 3.5 hours before the alert went out and 334 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: 1562 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 2097 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 83 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

666 
WGUS54 KAMA 280329
FFWAMA
TXC011-381-280930-
/O.NEW.KAMA.FF.W.0013.150528T0329Z-150528T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
1029 PM CDT WED MAY 27 2015

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN RANDALL COUNTY IN THE PANHANDLE OF TEXAS...
  SOUTHERN ARMSTRONG COUNTY IN THE PANHANDLE OF TEXAS...

* UNTIL 430 AM CDT THURSDAY

* AT 1025 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  THUNDERSTORMS WITH VERY HEAVY RAINFALL OVER SOUTHEAST RANDALL      
  COUNTY AND SOUTHERN ARMSTRONG COUNTY. DOPPLER RADAR INDICATES 1 TO 
  3 INCHES OF RAIN HAVE FALLEN OVER SOUTHEAST RANDALL COUNTY WITH    
  ADDITIONAL HEAVY RAIN EXPECTED. FLASH FLOODING IS LIKELY TO OCCUR. 
  THIS INCLUDES PALO DURO CANYON. AS MUCH AS 5 INCHES OF RAIN HAS    
  FALLEN IN THE PAST 6 HOURS OVER PORTIONS OF SOUTHERN ARMSTRONG     
  COUNTY AND ADDITIONAL HEAVY RAIN WILL WILL RESULT IN WORSENING OF  
  ONGOING FLOODING. HIGHWAY 207 THROUGH THE CANYON IS CLOSED DUE TO  
  FLOODING. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WAYSIDE...            PALO DURO CANYON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO ESCAPE
FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER
BEGINS RISING.

&&

LAT...LON 3497 10184 3502 10158 3497 10109 3474 10109
      3475 10183

$$

BRB

1 follow-up statement

432 
WGUS74 KAMA 280525
FFSAMA

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1225 AM CDT THU MAY 28 2015

TXC011-381-280930-
/O.CON.KAMA.FF.W.0013.000000T0000Z-150528T0930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
RANDALL TX-ARMSTRONG TX-
1225 AM CDT THU MAY 28 2015

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN ARMSTRONG AND
SOUTHEASTERN RANDALL COUNTIES UNTIL 430 AM CDT...

* AT 1220 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  THUNDERSTORMS HAVE WEAKENED BUT WERE STILL PRODUCING MODERATE TO   
  HEAVY RAINFALL ACROSS PORTIONS OF THE WARNED AREA. DOPPLER RADAR   
  ESTIMATES 2 TO 3 INCHES OF RAIN HAVE ALREADY FALLEN OVER PARTS OF  
  THE WARNED AREA IN THE PAST 4 HOURS AND PALO DURO CANYON PERSONEL 
  MEASURED 2.85 INCHES OF RAIN FELL 3.5 MILES NORTHEAST OF CETA      
  CANYON RETREAT. WHILE PRECIPITATION MAY TAPER OFF IN SOME          
  AREAS...IT WILL TAKE SOME TIME FOR ANY HIGH WATER TO RUNOFF.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  WAYSIDE...            PALO DURO CANYON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE LOW WATER CROSSINGS AT PALO DURO CANYON ARE LIKELY TO BE 
FLOODED AND EXTREMELY DANGEROUS. DO NOT ATTEMPT TO TRAVEL ACROSS 
FLOODED ROADS. IT ONLY TAKES A FEW INCHES OF SWIFTLY FLOWING WATER 
TO CARRY VEHICLES AWAY. CAMPERS AND HIKERS SHOULD SEEK HIGHER GROUND.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 3497 10184 3502 10158 3497 10109 3474 10109
      3475 10183

$$

BRB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 7:15 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Ochiltree, Roberts	30 min
May 27, 7:39 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Randall	66 min
May 27, 8:18 PM CDT	Tornado Warning	AMA	Armstrong	57 min
May 27, 8:29 PM CDT	Flash Flood Warning	AMA	Armstrong	3 hr
May 27, 9:14 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	61 min
May 27, 9:51 PM CDT	Tornado Warning	AMA	Randall	24 min
May 27, 9:58 PM CDT	Flash Flood Warning	AMA	Hemphill, Lipscomb	6 hr
May 27, 10:08 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley	67 min
May 27, 10:11 PM CDT	Severe Thunderstorm Warning	AMA	Randall	64 min
May 27, 10:41 PM CDT	River Flood Warning	AMA	Armstrong	18 hr
May 27, 11:02 PM CDT	Severe Thunderstorm Warning	AMA	Randall	43 min
May 27, 11:08 PM CDT	Flash Flood Warning	AMA	Collingsworth	3 hr
May 27, 11:14 PM CDT	Severe Thunderstorm Warning	AMA	Donley	61 min
May 27, 11:32 PM CDT	Severe Thunderstorm Warning	AMA	Randall	33 min
May 28, 12:03 AM CDT	Flash Flood Warning	AMA	Donley	4 hr
May 28, 12:07 AM CDT	Special Weather Statement	AMA	Randall	23 min
May 28, 1:12 AM CDT	Special Weather Statement	AMA	Randall	33 min
May 28, 1:13 AM CDT	River Flood Warning	AMA	Hemphill	19 hr
May 28, 1:45 AM CDT	Areal Flood Advisory	AMA	Collingsworth	4 hr
May 28, 1:52 AM CDT	Special Weather Statement	AMA	Randall	38 min
May 28, 2:02 AM CDT	Severe Thunderstorm Warning	AMA	Randall	43 min
May 28, 4:04 AM CDT	Flash Flood Watch	AMA	Armstrong, Carson, Collingsworth, Deaf Smith, Donley, Gray and 8 more	17 hr
May 28, 9:27 AM CDT	Special Weather Statement	AMA	Ochiltree	33 min
May 28, 4:10 PM CDT	Special Weather Statement	AMA	Dallam	50 min
May 28, 4:26 PM CDT	Severe Thunderstorm Warning	AMA	Dallam	64 min
May 28, 5:15 PM CDT	Special Weather Statement	AMA	Oldham	45 min
May 28, 5:26 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley	64 min
May 28, 6:32 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley	58 min
May 28, 6:36 PM CDT	Special Weather Statement	AMA	Sherman	39 min

Nearby

Flash Flood Warnings in Texas, 2015 Every flash flood warning in 2015

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.