Alert archive / Texas / Flash Flood Warnings in 2023

Flash Flood Warning 43, NWS Amarillo, TX

September 10, 2023Ochiltree County, Texas

NWS Amarillo, TX issued this flash flood warning at Sep 10, 2023, 9:35 PM CDT for Ochiltree County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 10, 2023, 9:35 PM CDT (02:35 UTC)
Expired: Sep 11, 2023, 12:18 AM CDT
In force: 3 hr
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Flood severity: None

County Ochiltree County, TX

The radar

The Amarillo radar (KAMA), 141 km from the middle of the area, began a volume at 02:38 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

Dodge City, (KDDC), launched 00:00Z, 2.6 hours before the alert went out and 185 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: 19 J/kg
Mixed-layer CIN: -272 J/kg
Mixed-layer LCL: 1503 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 396 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Amarillo, TX wrote its last area forecast discussion before this flash flood warning went out at Sep 10, 6:56 PM CDT, 2 hours 39 minutes earlier.

Area forecast discussion, Sep 10, 6:56 PM CDT, 2 hours 39 minutes before

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Hazardous weather outlook, Sep 10, 2:34 PM CDT, 7 hours 1 minute before

Hazardous Weather Outlook
National Weather Service Amarillo TX
234 PM CDT Sun Sep 10 2023

OKZ001>003-TXZ001>020-317-110745-
Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb-
Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson-
Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth-
Palo Duro Canyon-
234 PM CDT Sun Sep 10 2023

This Hazardous Weather Outlook is for the Texas and Oklahoma
Panhandles.

.DAY ONE...This Afternoon and Tonight.

Thunderstorms are likely across the Oklahoma Panhandle and much of
the Texas Panhandle late today into the overnight period. Large
hail, damaging winds, and flash flooding will be possible, mostly
in the central to eastern combined Panhandles.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Thunderstorms will be possible from Monday through Saturday. There
may be potential for severe storms on Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late this afternoon through the
evening.

In the hours before

Special weather statement, Sep 10, 5:14 PM CDT, 4 hours 21 minutes before

Special Weather Statement
National Weather Service Amarillo TX
514 PM CDT Sun Sep 10 2023

TXZ017-018-317-102245-
Palo Duro Canyon TX-Randall TX-Armstrong TX-
514 PM CDT Sun Sep 10 2023

...A strong thunderstorm will impact portions of northwestern
Armstrong and southeastern Randall Counties through 545 PM CDT...

At 514 PM CDT, Doppler radar was tracking a strong thunderstorm near
Palo Duro Canyon, or 10 miles east of Canyon, moving northeast at 20
mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Palo Duro Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Persons in campgrounds should consider seeking sturdy shelter until
this storm passes.

&&

LAT...LON 3482 10173 3496 10187 3518 10161 3497 10141
TIME...MOT...LOC 2214Z 231DEG 16KT 3494 10173

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

Ferguson

Special weather statement, Sep 10, 6:14 PM CDT, 3 hours 21 minutes before

Special Weather Statement
National Weather Service Amarillo TX
614 PM CDT Sun Sep 10 2023

TXZ003-004-009-102345-
Ochiltree TX-Roberts TX-Hansford TX-
614 PM CDT Sun Sep 10 2023

...Strong thunderstorms will impact portions of east central
Hansford, northern Roberts and western Ochiltree Counties through 645
PM CDT...

At 614 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 4 miles southwest of Waka to 13 miles southeast
of Spearman to 18 miles northwest of Codman. Movement was northeast
at 15 mph.

HAZARD...Wind gusts of 50 to 55 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Waka and Farnsworth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
the Panhandle of Texas.

&&

LAT...LON 3647 10091 3614 10080 3585 10057 3577 10092
      3627 10121
TIME...MOT...LOC 2314Z 242DEG 11KT 3623 10111 3604 10105 3587 10092

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...55 MPH

Ferguson

Local storm report, Sep 10, 6:36 PM CDT, 2 hours 59 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 10, 8:04 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Lipscomb, Ochiltree	56 min
Sep 10, 8:16 PM CDT	Special Weather Statement	AMA	Roberts	29 min
Sep 10, 8:51 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Lipscomb, Ochiltree	54 min
Sep 10, 9:04 PM CDT	Severe Thunderstorm Warning Considerable damage threat	AMA	Hansford, Ochiltree	56 min
Sep 10, 9:22 PM CDT	Areal Flood Advisory	AMA	Hansford, Ochiltree	3 hr
Sep 10, 9:35 PM CDT	Severe Thunderstorm Warning Considerable damage threat	AMA	Hansford, Hemphill, Hutchinson, Lipscomb, Ochiltree, Roberts	55 min
Sep 10, 9:40 PM CDT	Special Weather Statement	AMA	Potter, Randall	35 min
Sep 10, 10:00 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Deaf Smith, Oldham, Potter, Randall	75 min
Sep 10, 10:27 PM CDT	Areal Flood Advisory	AMA	Hansford, Hemphill, Lipscomb, Ochiltree, Roberts	3 hr
Sep 10, 10:30 PM CDT	Special Weather Statement	AMA	Gray, Hemphill, Hutchinson, Roberts	45 min
Sep 10, 10:39 PM CDT	Flash Flood Warning	AMA	Hemphill, Lipscomb, Ochiltree, Roberts	3 hr
Sep 10, 10:55 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hutchinson, Roberts	65 min
Sep 10, 11:41 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley, Gray, Wheeler	94 min
Sep 11, 12:21 AM CDT	Areal Flood Advisory	AMA	Collingsworth, Donley, Gray, Hemphill, Wheeler	2 hr
Sep 10, 7:14 PM CDT	Special Weather Statement	AMA	Beaver	31 min
Sep 10, 7:16 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	59 min
Sep 10, 7:30 PM CDT	Special Weather Statement	AMA	Texas	30 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.