Alert archive / Texas / Flash Flood Warnings in 2021

Flash Flood Warning 1, NWS Lubbock, TX

May 15, 2021Cochran County, Texas

NWS Lubbock, TX issued this flash flood warning at May 15, 2021, 7:41 PM CDT for Cochran County, Texas. It was in force for 109 min. 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 15, 2021, 7:41 PM CDT (00:41 UTC)
Expired
May 15, 2021, 9:30 PM CDT
In force
109 min
Issued by
NWS Lubbock, TX
Area
Storm-based polygon
Flood severity
None

County Cochran County, TX

The radar

The Lubbock radar (KLBB), 87 km from the middle of the area, began a volume at 00:42 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 00:00Z, 0.7 hours before the alert went out and 191 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-pSkew-T log-p diagram, Amarillo Airport, TX at 00:00Z on 2021-05-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 826 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 2021-05-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
826 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1913 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
161 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

The text

As transmitted.

451 
WGUS54 KLUB 160041
FFWLUB
TXC079-160230-
/O.NEW.KLUB.FF.W.0001.210516T0041Z-210516T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Lubbock TX
741 PM CDT Sat May 15 2021

The National Weather Service in Lubbock has issued a

* Flash Flood Warning for...
  Northeastern Cochran County in northwestern Texas...

* Until 930 PM CDT.

* At 741 PM CDT, Doppler radar and automated rain gauges indicated 
  thunderstorms producing heavy rain in Morton. Between 2 and 4.5 
  inches of rain have fallen. Additional rainfall amounts up to 1 
  inch are possible in the warned area. Flash flooding is already 
  occurring.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar and automated gauges.

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

* Some locations that will experience flash flooding include...
  Morton.

A new area of storms is approaching Morton from the southwest.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3378 10284 3380 10263 3367 10261 3367 10281

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

Lipe
3 follow-up statements
478 
WGUS74 KLUB 160115
FFSLUB

Flash Flood Statement
National Weather Service Lubbock TX
815 PM CDT Sat May 15 2021

TXC079-160230-
/O.CON.KLUB.FF.W.0001.000000T0000Z-210516T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cochran TX-
815 PM CDT Sat May 15 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM CDT THIS 
EVENING FOR NORTHEASTERN COCHRAN COUNTY...

At 815 PM CDT, Doppler radar and automated rain gauges indicated 
heavy rain with thunderstorms mainly south of Morton moving east. 
Between 2 and 4.5 inches of rain have fallen. Additional rainfall 
amounts of 0.5 inch are possible in the warned area. Flash flooding 
is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

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

Some locations that will experience flash flooding include...
  Morton and rural areas around the city.

Although the heaviest rain may be ending soon, flooding is likely to 
continue until well after dark.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3378 10284 3380 10263 3367 10261 3367 10281

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

Lipe
815 
WGUS74 KLUB 160211
FFSLUB

Flash Flood Statement
National Weather Service Lubbock TX
911 PM CDT Sat May 15 2021

TXC079-160230-
/O.CON.KLUB.FF.W.0001.000000T0000Z-210516T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cochran TX-
911 PM CDT Sat May 15 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM CDT THIS 
EVENING FOR NORTHEASTERN COCHRAN COUNTY...

At 911 PM CDT, Doppler radar indicated all the thunderstorms had 
moved east out of the warned area.  Between 2 and 4.5 inches of rain 
fell earlier and flash flooding continues, especially just north and 
northeast of Morton.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar and automated gauges.

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

Some locations that will experience flash flooding include...
  Morton and highways 385 and 114.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.  Flooding of low lying areas may continue for 
many hours after the storms move on.

Be aware of your surroundings and do not drive on roads flooded to 
unknown depth.

&&

LAT...LON 3378 10284 3380 10263 3367 10261 3367 10281

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

Lipe
242 
WGUS74 KLUB 160229
FFSLUB

Flash Flood Statement
National Weather Service Lubbock TX
929 PM CDT Sat May 15 2021

TXC079-160239-
/O.EXP.KLUB.FF.W.0001.000000T0000Z-210516T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cochran TX-
929 PM CDT Sat May 15 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 930 PM CDT THIS EVENING FOR 
NORTHEASTERN COCHRAN COUNTY...

Although the heavy rain has ended, some minor flooding is expected 
to continue for several hours in low lying and poorly drained 
areas.  Do not drive into areas where water covers the roads to 
unknown depth. Please continue to heed remaining road closures.

LAT...LON 3378 10284 3380 10263 3367 10261 3367 10281

$$

Lipe

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 7:04 PM CDTSevere Thunderstorm WarningLUBBailey, Cochran, Yoakum56 min
May 15, 7:38 PM CDTSevere Thunderstorm WarningLUBBailey, Cochran, Hockley, Lamb, Lubbock, Lynn and 2 more52 min
May 15, 8:24 PM CDTSevere Thunderstorm WarningLUBCochran, Hale, Hockley, Lamb, Lubbock, Lynn and 2 more66 min
May 15, 8:52 PM CDTAreal Flood AdvisoryLUBLubbock113 min
May 15, 9:06 PM CDTSevere Thunderstorm WarningLUBLynn24 min
May 15, 9:29 PM CDTSpecial Weather StatementLUBHale, Swisher61 min
May 15, 9:31 PM CDTSevere Thunderstorm WarningLUBCrosby, Dickens, Floyd, Garza, Hale, Kent and 4 more17 min
May 15, 10:07 PM CDTSpecial Weather StatementLUBHale23 min
May 16, 4:55 PM CDTSevere Thunderstorm WarningLUBChildress, Hall65 min
May 16, 5:53 PM CDTSevere Thunderstorm WarningLUBChildress, Cottle, Hall52 min
May 16, 5:59 PM CDTSevere Thunderstorm WarningLUBHall31 min
May 16, 6:43 PM CDTSevere Thunderstorm WarningLUBChildress, Cottle, Hall, Motley47 min

Nearby

Flash Flood Warnings in Texas, 2021Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.