Alert archive / Colorado / Flash Flood Warnings in 2017

Flash Flood Warning 45, NWS Pueblo, CO

August 8, 2017Las Animas County, Colorado

NWS Pueblo, CO issued this flash flood warning at Aug 8, 2017, 6:36 PM MDT for Las Animas County, Colorado. 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 outline as issued.

The facts

Issued
Aug 8, 2017, 6:36 PM MDT (00:36 UTC)
Expired
Aug 8, 2017, 9:30 PM MDT
In force
3 hr
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

County Las Animas County, CO

The radar

The Pueblo radar (KPUX), 159 km from the middle of the area, began a volume at 00:40 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, 0.6 hours before the alert went out and 268 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 2017-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 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 2017-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 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
29 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
1101 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

447 
WGUS55 KPUB 090036
FFWPUB
COC071-090330-
/O.NEW.KPUB.FF.W.0045.170809T0036Z-170809T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
636 PM MDT TUE AUG 8 2017

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  Southeastern Las Animas County in southeastern Colorado...

* Until 930 PM MDT

* At 636 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Open country south of Kim.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

&&

LAT...LON 3722 10374 3726 10308 3700 10309 3700 10382
      3701 10382

$$

KT
3 follow-up statements
501 
WGUS75 KPUB 090120
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
720 PM MDT TUE AUG 8 2017

COC071-090330-
/O.CON.KPUB.FF.W.0045.000000T0000Z-170809T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Las Animas CO-
720 PM MDT TUE AUG 8 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM MDT FOR
SOUTHEASTERN LAS ANIMAS COUNTY...

At 717 PM MDT, Doppler radar indicated that the thunderstorms that 
produced heavy rain across the warned area have weakened 
considerably. Pueblo doppler radar estimated around two inches of 
rain has fallen south of highway 160, with the heaviest centered 
from 16 miles west southwest of Kim to 9 miles south of Kim. Flash 
flooding in this area will continue until the water has a chance to 
recede.

Some locations that will experience flooding include...
Open country south of highway 160.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

&&

LAT...LON 3722 10374 3726 10308 3700 10309 3700 10382
      3701 10382

$$

KT
178 
WGUS75 KPUB 090223
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
823 PM MDT TUE AUG 8 2017

COC071-090330-
/O.CON.KPUB.FF.W.0045.000000T0000Z-170809T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Las Animas CO-
823 PM MDT TUE AUG 8 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 930 PM MDT FOR
SOUTHEASTERN LAS ANIMAS COUNTY...

At 820 PM MDT, Doppler radar indicated the heavier rain has 
ended across the warned area. However brief light to moderate rain 
showers will continue across the area through 930 PM.  Pueblo 
doppler radar estimated up to 2 and a half inches of rain has fallen 
along an area extending from 10 miles northeast of Branson to 10 
miles south of Kim.  Flash flooding is expected to continue in 
crees and dry washes until the water has a chance to recede.   

Some locations that will experience flooding include...
Open country south of Highway 160 in southeast La Animas County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

&&

LAT...LON 3722 10374 3726 10308 3700 10309 3700 10382
      3701 10382

$$

KT
548 
WGUS75 KPUB 090321
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
921 PM MDT TUE AUG 8 2017

COC071-090331-
/O.EXP.KPUB.FF.W.0045.000000T0000Z-170809T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Las Animas CO-
921 PM MDT TUE AUG 8 2017

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN LAS ANIMAS COUNTY WILL
EXPIRE AT 930 PM MDT...

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

LAT...LON 3722 10374 3726 10308 3700 10309 3700 10382
      3701 10382

$$

KT

The office that day

Everything else NWS Pueblo, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 8, 6:10 PM MDTSpecial Weather StatementPUB50 min
Aug 8, 6:31 PM MDTSpecial Weather StatementPUBBaca44 min
Aug 8, 7:01 PM MDTAreal Flood AdvisoryPUBBaca, Las Animas3 hr
Aug 9, 1:41 PM MDTSpecial Weather StatementPUBConejos34 min
Aug 9, 2:22 PM MDTSpecial Weather StatementPUBCostilla38 min
Aug 9, 4:18 PM MDTSpecial Weather StatementPUBEl Paso27 min
Aug 9, 4:38 PM MDTSpecial Weather StatementPUBTeller37 min
Aug 9, 4:41 PM MDTSpecial Weather StatementPUBEl Paso34 min
Aug 9, 5:04 PM MDTAreal Flood AdvisoryPUBTeller3 hr
Aug 9, 5:19 PM MDTSpecial Weather StatementPUBTeller26 min
Aug 9, 5:34 PM MDTFlash Flood WarningPUBTeller5 hr
Aug 9, 5:45 PM MDTSpecial Weather StatementPUBEl Paso30 min

Nearby

Flash Flood Warnings in Colorado, 2017Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.