Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 8, NWS Amarillo, TX

July 1, 20214 counties in Texas

NWS Amarillo, TX issued this flash flood warning at Jul 1, 2021, 11:25 PM CDT for 4 counties in Texas. It was in force for 5 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 1, 2021, 11:25 PM CDT (04:25 UTC)
Expired: Jul 2, 2021, 4:45 AM CDT
In force: 5 hr
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Flood severity: None

Counties Carson County, TX, Oldham County, TX, Potter County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 13 km from the middle of the area, began a volume at 04:25 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.

What was reported inside it

Time	Report	Where	Remark
Jul 1, 11:50 PM CDT	FLASH FLOOD	1 N Panhandle, TX	CARSON COUNTY SO REPORTED THAT A CAR WAS SWEPT OFF THE ROAD AND STRANDED IN THE DITCH ON HIGHWAY 207 1 MILE NORTH OF PANHANDLE.
Jul 2, 12:46 AM CDT	FLOOD	6 E Bushland, TX	AROUND 8 INCHES OF WATER PONDING ON ROAD ALONG I-40 WEST BOUND NEAR HELIUM RD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.4 hours before the alert went out and 14 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: 784 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1674 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

373 
WGUS54 KAMA 020425
FFWAMA
TXC065-359-375-381-020945-
/O.NEW.KAMA.FF.W.0008.210702T0425Z-210702T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Amarillo TX
1125 PM CDT Thu Jul 1 2021

The National Weather Service in Amarillo has issued a

* Flash Flood Warning for...
  Southern Carson County in the panhandle of Texas...
  Southeastern Oldham County in the panhandle of Texas...
  Potter County in the panhandle of Texas...
  Northern Randall County in the panhandle of Texas...

* Until 445 AM CDT.

* At 1125 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to 2 inches of rain have 
  fallen. Additional rainfall amounts of 1 to 3 inches are possible 
  in the warned area. Flash flooding is ongoing or expected to begin 
  shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Amarillo, Panhandle, Lake Tanglewood, Mescalero Park, Bushland, 
  Wildorado and Pantex.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3518 10229 3523 10237 3533 10233 3539 10212
      3550 10186 3547 10132 3541 10128 3538 10115
      3524 10142 3521 10157 3518 10163 3511 10163
      3505 10177 3509 10203 3514 10217 3518 10217

FLASH FLOOD...RADAR INDICATED

$$

Ferguson

2 follow-up statements

297 
WGUS74 KAMA 020706
FFSAMA

Flash Flood Statement
National Weather Service Amarillo TX
206 AM CDT Fri Jul 2 2021

TXC065-359-375-381-020945-
/O.CON.KAMA.FF.W.0008.000000T0000Z-210702T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carson TX-Oldham TX-Potter TX-Randall TX-
206 AM CDT Fri Jul 2 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM CDT EARLY THIS 
MORNING FOR SOUTHERN CARSON, SOUTHEASTERN OLDHAM, POTTER AND 
NORTHERN RANDALL COUNTIES...

At 206 AM CDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 1 and 3 inches of rain have 
fallen. Additional rainfall amounts up to 1 inch are possible in the 
warned area. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams, urban areas,
         highways, streets and underpasses as well as other poor
         drainage and low-lying areas.

Some locations that will experience flash flooding include...
  Amarillo, Panhandle, Lake Tanglewood, Mescalero Park, Bushland, 
  Wildorado and Pantex.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

&&

LAT...LON 3518 10229 3523 10237 3533 10233 3539 10212
      3550 10186 3547 10132 3541 10128 3538 10115
      3524 10142 3521 10157 3518 10163 3511 10163
      3505 10177 3509 10203 3514 10217 3518 10217

FLASH FLOOD...RADAR INDICATED

$$

Ferguson

473 
WGUS74 KAMA 020939
FFSAMA

Flash Flood Statement
National Weather Service Amarillo TX
439 AM CDT Fri Jul 2 2021

TXC065-359-375-381-020949-
/O.EXP.KAMA.FF.W.0008.000000T0000Z-210702T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Carson TX-Oldham TX-Potter TX-Randall TX-
439 AM CDT Fri Jul 2 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 445 AM CDT EARLY THIS MORNING 
FOR SOUTHERN CARSON, SOUTHEASTERN OLDHAM, POTTER AND NORTHERN 
RANDALL COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

A Flood Watch remains in effect until 700 PM CDT Friday for A 
portion of the Panhandle of Texas.

LAT...LON 3518 10229 3523 10237 3533 10233 3539 10212
      3550 10186 3547 10132 3541 10128 3538 10115
      3524 10142 3521 10157 3518 10163 3511 10163
      3505 10177 3509 10203 3514 10217 3518 10217

$$

Ferguson

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 7:55 PM CDT	Areal Flood Advisory	AMA	Collingsworth, Donley, Gray, Wheeler	3 hr
Jul 1, 8:44 PM CDT	Areal Flood Advisory	AMA	Oldham, Potter	3 hr
Jul 1, 8:47 PM CDT	Areal Flood Advisory	AMA	Carson, Gray	5 hr
Jul 1, 10:18 PM CDT	Areal Flood Advisory	AMA	Oldham	5 hr
Jul 1, 10:48 PM CDT	Areal Flood Advisory	AMA	Oldham, Potter, Randall	37 min
Jul 1, 11:47 PM CDT	Areal Flood Advisory	AMA	Oldham, Potter	3 hr
Jul 2, 12:32 AM CDT	Areal Flood Advisory	AMA	Armstrong, Carson, Deaf Smith, Randall	4 hr
Jul 2, 1:55 AM CDT	Areal Flood Advisory	AMA	Armstrong, Collingsworth, Donley	2 hr
Jul 2, 4:14 AM CDT	Flash Flood Warning	AMA	Armstrong, Collingsworth, Donley	4 hr
Jul 2, 8:33 AM CDT	Areal Flood Advisory	AMA	Deaf Smith	3 hr
Jul 2, 12:19 PM CDT	Areal Flood Advisory	AMA	Deaf Smith	6 hr
Jul 2, 12:51 PM CDT	Areal Flood Advisory	AMA	Collingsworth, Donley	3 hr

Nearby

Flash Flood Warnings in Texas, 2021 Every flash flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.