Alert archive / Texas / Flash Flood Warnings in 2023

Flash Flood Warning 21, NWS Amarillo, TX

June 3, 2023Deaf Smith County, Texas

NWS Amarillo, TX issued this flash flood warning at Jun 3, 2023, 6:42 PM CDT for Deaf Smith County, Texas. It was in force for 4 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: Jun 3, 2023, 6:42 PM CDT (23:42 UTC)
Expired: Jun 3, 2023, 10:45 PM CDT
In force: 4 hr
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Flood severity: None

County Deaf Smith County, TX

The radar

The Amarillo radar (KAMA), 83 km from the middle of the area, began a volume at 23:42 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, 11.7 hours before the alert went out and 84 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1022 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

581 
WGUS54 KAMA 032342
FFWAMA
TXC117-040345-
/O.NEW.KAMA.FF.W.0021.230603T2342Z-230604T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Amarillo TX
642 PM CDT Sat Jun 3 2023

The National Weather Service in Amarillo has issued a

* Flash Flood Warning for...
  Southeastern Deaf Smith County in the panhandle of Texas...

* Until 1045 PM CDT.

* At 642 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across 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...
  Hereford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3496 10258 3495 10247 3478 10221 3475 10221
      3475 10223 3475 10237 3475 10253 3475 10263
      3475 10264 3476 10263 3492 10259

FLASH FLOOD...RADAR INDICATED

$$

LG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 2, 8:29 PM CDT	Areal Flood Warning	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	15 hr
Jun 2, 9:14 PM CDT	River Flood Advisory	AMA	Hemphill	28 hr
Jun 2, 9:14 PM CDT	River Flood Advisory	AMA	Wheeler	36 hr
Jun 3, 12:41 AM CDT	Areal Flood Warning	AMA	Collingsworth, Wheeler	11 hr
Jun 3, 12:52 AM CDT	River Flood Advisory	AMA	Potter	7 hr
Jun 3, 5:55 AM CDT	Dense Fog Advisory	AMA	Dallam, Hartley	64 min
Jun 3, 6:12 AM CDT	River Flood Warning	AMA	Lipscomb, Ochiltree	8 hr
Jun 3, 6:59 AM CDT	Dense Fog Advisory	AMA	Dallam, Hartley, Moore	3 hr
Jun 3, 8:01 AM CDT	River Flood Warning	AMA	Potter	6 hr
Jun 3, 1:48 PM CDT	River Flood Advisory	AMA	Potter	24 hr
Jun 3, 1:57 PM CDT	River Flood Advisory	AMA	Lipscomb, Ochiltree	53 min
Jun 3, 5:56 PM CDT	Special Weather Statement	AMA	Deaf Smith	64 min
Jun 3, 6:07 PM CDT	Severe Thunderstorm Warning Considerable damage threat	AMA	Deaf Smith	53 min
Jun 3, 6:52 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Randall	98 min

Nearby

Flash Flood Warnings in Texas, 2023 Every flash flood warning in 2023

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.