Alert archive / Texas / Flash Flood Warnings in 2017

Flash Flood Warning 2, NWS Amarillo, TX

June 25, 2017Potter County, Randall County, Texas

NWS Amarillo, TX issued this flash flood warning at Jun 25, 2017, 11:13 PM CDT for Potter County, Randall County, Texas. It was in force for 2 hr. 1 report 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: Jun 25, 2017, 11:13 PM CDT (04:13 UTC)
Expired: Jun 26, 2017, 1:15 AM CDT
In force: 2 hr
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Flood severity: None

Counties Potter County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 12 km from the middle of the area, began a volume at 04:16 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
Jun 25, 11:13 PM CDT	FLASH FLOOD	Amarillo, TX	INTERSTATE 40 AT WASHINGTON CLOSED FOR EAST BOUND AND WEST BOUND TRAFFIC.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this flash flood warning; the first came 0 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.2 hours before the alert went out and 12 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: 421 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 1347 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 65 m²/s²
0-3 km storm-relative helicity: 182 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 3.9

Open this sounding in Storm Lab

The text

As transmitted.

759 
WGUS54 KAMA 260413
FFWAMA
TXC375-381-260615-
/O.NEW.KAMA.FF.W.0002.170626T0413Z-170626T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Amarillo TX
1113 PM CDT SUN JUN 25 2017

The National Weather Service in Amarillo has issued a

* Flash Flood Warning for...
  Northeastern Randall County in the Panhandle of Texas...
  Southeastern Potter County in the Panhandle of Texas...

* Until 115 AM CDT
          
* At 1113 PM CDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. One to two inches of rain have
  already fallen. Flash flooding is expected.

* Some locations that will experience flooding include...
  Amarillo, Canyon, Lake Tanglewood, Mescalero Park and Timbercreek
  Canyon.

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 3531 10163 3495 10163 3495 10204 3524 10205

$$

JC

1 follow-up statement

175 
WGUS74 KAMA 260608
FFSAMA

Flash Flood Statement
National Weather Service Amarillo TX
108 AM CDT MON JUN 26 2017

TXC375-381-260618-
/O.EXP.KAMA.FF.W.0002.000000T0000Z-170626T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Randall TX-Potter TX-
108 AM CDT MON JUN 26 2017

...THE FLASH FLOOD WARNING FOR NORTHEASTERN RANDALL AND SOUTHEASTERN
POTTER COUNTIES WILL EXPIRE AT 115 AM CDT...

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

LAT...LON 3531 10163 3495 10163 3495 10204 3524 10205

$$

Ward

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 Jun 25, 6:41 PM CDT, 4 hours 32 minutes earlier.

Area forecast discussion, Jun 25, 6:41 PM CDT, 4 hours 32 minutes before

Area Forecast Discussion
National Weather Service Amarillo TX
641 PM CDT Sun Jun 25 2017

.AVIATION...
For the 00z TAFs...
Thunderstorms over northern parts of forecast area will likely
pose a near-term threat at GUY, with DHT being threatened
slightly later.  Less certainty for timing for AMA, but
thunderstorms are likely this evening and tonight.  MVFR ceilings
expected to develop at all terminals before sunrise, probably
lasting much of the morning.  Amendments likely to be forthcoming
due to timing uncertainties.

Cockrell

&&

.PREV DISCUSSION... /Issued 410 PM CDT Sun Jun 25 2017/

DISCUSSION...
Not much for changes in this forecast package as the forecast is
still pretty well on track. Temps this afternoon have been
slightly warmer than yesterday with the higher temps in the west
today and cooler on the eastern side of the CWA due to clouds
hanging on longer there. The break in clouds has allowed for more
daytime heating and thus increasing the instability today. CAMs
are still disagreeing slightly on the extent of coverage for
showers and thunderstorms this afternoon through the night. Feel
there is a decent chance for storms to develop and move across the
majority of the area overnight. Due to the increased instability
and better shear today, storms may become stronger than what we
saw yesterday; some of the storms on the western half of the area
may become severe with large hail and damaging winds being the
primary threats. We are already seeing initiation in Sherman and
Moore and expect more storms to fire up within the area or move in
from the mountains in New Mexico.

Monday will look somewhat similar to today with some of the cloud
cover lingering in the morning hours, followed by a break out of
clouds and then storms again in the late afternoon to evening.
These storms may also become strong to severe depending on how
much clouds break out, allowing for more instability to be
generated. Tuesday looks to see a warm up as winds turn more
southwesterly in the low levels and allow for downsloping winds.
As the upper level ridge moves across the central Plains, this
will be the last day for northwest flow aloft and thus the final
day for storm chances to come in from the mountains. Mid week will
see zonal flow aloft as a trough tries to move south from Canada.
This will lead to even more downsloping and warmer temps. The end
of the week will see a return of high pressure building up in the
desert southwest. This leads to a return of precip chances for the
weekend.

Beat

&&

.PRELIMINARY POINT TEMPS/POPS...
Amarillo TX                60  82  61  87  67 /  60  40  30  10  10
Beaver OK                  60  86  63  90  71 /  40  20  30  10  20
Boise City OK              59  82  60  87  66 /  60  20  20  10  20
Borger TX                  63  86  64  89  71 /  60  30  20  10  20
Boys Ranch TX              61  86  61  89  68 /  70  40  30  10  10
Canyon TX                  60  83  61  87  67 /  60  40  30  10  10
Clarendon TX               62  82  62  86  68 /  50  40  30  10  10
Dalhart TX                 60  86  61  87  65 /  70  30  20  10  20
Guymon OK                  62  85  63  90  69 /  60  20  20  10  20
Hereford TX                59  85  61  87  67 /  70  40  30  10  10
Lipscomb TX                64  85  63  88  72 /  40  30  30  10  20
Pampa TX                   62  84  61  86  68 /  50  30  20  10  20
Shamrock TX                65  85  63  87  70 /  40  40  30  10  10
Wellington TX              67  85  64  88  71 /  40  40  30  10  10

&&

.AMA Watches/Warnings/Advisories...
TX...None.
OK...None.

&&

03/14

Hazardous weather outlook, Jun 25, 4:19 PM CDT, 6 hours 54 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
419 PM CDT Sun Jun 25 2017

OKZ001>003-TXZ001>020-261000-
Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb-
Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson-
Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth-
419 PM CDT Sun Jun 25 2017

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

.DAY ONE...Tonight.

Thunderstorms are possible over all of the Oklahoma and Texas
Panhandles today. Some storms across the northwestern third of the
Panhandles may become severe, with large hail and damaging winds
being the primary hazards.

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

Thunderstorms will be possible across all of the Texas and
Oklahoma Panhandles Monday through Tuesday night. Isolated strong
to severe storms will be possible mainly in the western Texas and
Oklahoma Panhandles Monday and Tuesday. Isolated thunderstorms
will be possible again for portions of the Panhandles on Thursday
night and Friday night through Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Local storm report, Jun 25, 10:12 PM CDT, 1 hour 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1012 PM CDT SUN JUN 25 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1004 PM     TSTM WND GST     1 SE VEGA               35.24N 102.42W
06/25/2017  M72 MPH          OLDHAM             TX   BROADCAST MEDIA

&&

EVENT NUMBER AMA1700733

WEBER

Special weather statement, Jun 25, 10:18 PM CDT, 55 minutes before

Special Weather Statement
National Weather Service Amarillo TX
1018 PM CDT SUN JUN 25 2017

TXZ012>014-017>019-260415-
Gray TX-Potter TX-Donley TX-Randall TX-Carson TX-Armstrong TX-
1018 PM CDT SUN JUN 25 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN RANDALL...NORTHERN
ARMSTRONG...CARSON...SOUTHWESTERN GRAY...SOUTHEASTERN POTTER AND
NORTHWESTERN DONLEY COUNTIES UNTIL 1115 PM CDT...

At 1018 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 3 miles east of White Deer to 9 miles southeast
of Valley De Oro. Movement was south at 35 mph.

Dime size hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Amarillo, Canyon, Panhandle, Claude, White Deer, Lake Tanglewood,
Groom, Howardwick, Washburn, Goodnight, Mescalero Park, Greenbelt
Lake, Timbercreek Canyon and Pantex.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

A severe thunderstorm watch remains in effect until 1100 PM CDT for
the Panhandle of Texas.

LAT...LON 3497 10084 3497 10198 3544 10198 3549 10168
      3548 10095
TIME...MOT...LOC 0318Z 346DEG 29KT 3542 10112 3538 10196

Beat

Special weather statement, Jun 25, 10:27 PM CDT, 46 minutes before

Special Weather Statement
National Weather Service Amarillo TX
1027 PM CDT SUN JUN 25 2017

TXZ011-016-260400-
Deaf Smith TX-Oldham TX-
1027 PM CDT SUN JUN 25 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN OLDHAM AND NORTHERN
DEAF SMITH COUNTIES UNTIL 1100 PM CDT...

At 1027 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Wildorado to 7 miles southeast of Glenrio.
Movement was south at 25 mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Simms and Wildorado.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

A severe thunderstorm watch remains in effect until 1100 PM CDT for
the Panhandle of Texas.

LAT...LON 3504 10230 3496 10304 3517 10303 3523 10224
TIME...MOT...LOC 0327Z 007DEG 23KT 3518 10227 3508 10297

Beat

Special weather statement, Jun 25, 10:57 PM CDT, 16 minutes before

Special Weather Statement
National Weather Service Amarillo TX
1057 PM CDT SUN JUN 25 2017

TXZ012>014-016>019-260500-
Gray TX-Potter TX-Donley TX-Randall TX-Carson TX-Deaf Smith TX-
Armstrong TX-
1057 PM CDT SUN JUN 25 2017

...SIGNIFICANT WEATHER ADVISORY FOR RANDALL...ARMSTRONG...SOUTHERN
CARSON...DEAF SMITH...SOUTHWESTERN GRAY...SOUTHEASTERN POTTER AND
WESTERN DONLEY COUNTIES UNTIL MIDNIGHT CDT...

At 1057 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 4 miles northwest of Bootleg to 3 miles
northeast of Groom. Movement was south at 30 mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Amarillo, Hereford, Canyon, Clarendon, Claude, Lake Tanglewood,
Groom, Howardwick, Buffalo Lake, Wayside, Washburn, Umbarger,
Bootleg, Palo Duro Canyon, Goodnight, Mescalero Park, Dawn, Greenbelt
Lake and Timbercreek Canyon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

A severe thunderstorm watch remains in effect until 100 AM CDT for
the Panhandle of Texas.

LAT...LON 3475 10299 3493 10295 3518 10209 3528 10091
      3475 10081
TIME...MOT...LOC 0357Z 357DEG 27KT 3488 10286 3524 10106

Beat

Local storm report, Jun 25, 11:04 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1104 PM CDT SUN JUN 25 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1055 PM     TSTM WND GST     5 ENE HEREFORD          34.86N 102.33W
06/25/2017  M67 MPH          DEAF SMITH         TX   AWOS

&&

EVENT NUMBER AMA1700734

14

Local storm report, Jun 25, 11:07 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1107 PM CDT SUN JUN 25 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1025 PM     TSTM WND GST     2 ESE WILDORADO         35.21N 102.21W
06/25/2017  M81 MPH          OLDHAM             TX   BROADCAST MEDIA

&&

EVENT NUMBER AMA1700735

14

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 7:04 PM CDT	Severe Thunderstorm Warning	AMA	Dallam	86 min
Jun 25, 7:54 PM CDT	Severe Thunderstorm Warning	AMA	Moore	62 min
Jun 25, 8:04 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley	86 min
Jun 25, 8:17 PM CDT	Areal Flood Advisory	AMA	Dallam, Hartley, Moore	118 min
Jun 25, 8:55 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Oldham	95 min
Jun 25, 9:14 PM CDT	Special Weather Statement	AMA	Potter	61 min
Jun 25, 9:17 PM CDT	Special Weather Statement	AMA	Deaf Smith	58 min
Jun 25, 9:28 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	92 min
Jun 25, 9:32 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	88 min
Jun 25, 10:18 PM CDT	Special Weather Statement	AMA	Carson, Potter	57 min
Jun 25, 10:27 PM CDT	Special Weather Statement	AMA	Deaf Smith	33 min
Jun 25, 10:33 PM CDT	Areal Flood Advisory	AMA	Deaf Smith, Oldham, Potter, Randall	117 min
Jun 25, 10:57 PM CDT	Special Weather Statement	AMA	Armstrong, Deaf Smith, Randall	63 min

Nearby

Flash Flood Warnings in Texas, 2017 Every flash flood warning in 2017

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.