Alert archive / Colorado / Flash Flood Warnings in 2020

Flash Flood Warning 39, NWS Pueblo, CO

July 26, 2020Las Animas County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 26, 2020, 3:42 PM MDT for Las Animas County, Colorado. It was in force for 108 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
Jul 26, 2020, 3:42 PM MDT (21:42 UTC)
Expired
Jul 26, 2020, 5:30 PM MDT
In force
108 min
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 21:44 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

Albuquerq/Krtlnd, NM (KABQ), launched 12:00Z, 9.7 hours before the alert went out and 278 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, Albuquerq/Krtlnd, NM at 12:00Z on 2020-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 73 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, Albuquerq/Krtlnd, NM at 12:00Z on 2020-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.1939Sfc1 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
73 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
1154 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted.

000 
WGUS55 KPUB 262142
FFWPUB
COC071-270045-
/O.NEW.KPUB.FF.W.0039.200726T2142Z-200727T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
342 PM MDT Sun Jul 26 2020

The National Weather Service in Pueblo has issued a

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

* Until 645 PM MDT.

* At 339 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across southwest Las Animas County. Radar estimates 
  that two to three inches of rain has already fallen in the area 
  southwest of Weston, with around an inch of rain over the rest of 
  the area. Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flooding of small creeks and streams, urban areas, 
           highways, streets and underpasses as well as other 
           drainage and low lying areas.

* Some locations that will experience flooding include...
  Stonewall and Weston. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3725 10481 3701 10475 3701 10514 3725 10514

FLASH FLOOD...RADAR INDICATED

$$

28
3 follow-up statements
006 
WGUS75 KPUB 262159
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
359 PM MDT Sun Jul 26 2020

COC071-270045-
/O.CON.KPUB.FF.W.0039.000000T0000Z-200727T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Las Animas CO-
359 PM MDT Sun Jul 26 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR
SOUTHWESTERN LAS ANIMAS COUNTY...

At 355 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain across far western Las Animas County. Radar estimates that two 
to three inches of rain have already fallen in the area southwest of 
Stonewall and Weston, with around an inch in other areas. Flash 
flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flooding of small creeks and streams, urban areas, 
         highways, streets and underpasses as well as other drainage 
         and low lying areas.

Some locations that will experience flooding include...
Stonewall and Weston. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3725 10481 3701 10475 3701 10514 3725 10514

FLASH FLOOD...RADAR INDICATED

$$

28
830 
WGUS75 KPUB 262250
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
450 PM MDT Sun Jul 26 2020

COC071-270045-
/O.CON.KPUB.FF.W.0039.000000T0000Z-200727T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Las Animas CO-
450 PM MDT Sun Jul 26 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR
SOUTHWESTERN LAS ANIMAS COUNTY...

At 449 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain across far western Las Animas County. Radar estimates that two 
to three inches of rain have already fallen in the area southwest of 
Stonewall and Weston, with around an inch in other areas. Flash 
flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flooding of small creeks and streams, urban areas, 
         highways, streets and underpasses as well as other drainage 
         and low lying areas.

Some locations that will experience flooding include...
Stonewall and Weston. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3725 10481 3701 10475 3701 10514 3725 10514

FLASH FLOOD...RADAR INDICATED

$$

KTS
245 
WGUS75 KPUB 262330
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
530 PM MDT Sun Jul 26 2020

COC071-262340-
/O.CAN.KPUB.FF.W.0039.000000T0000Z-200727T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Las Animas CO-
530 PM MDT Sun Jul 26 2020

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN LAS ANIMAS COUNTY IS
CANCELLED...

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

LAT...LON 3725 10481 3701 10475 3701 10514 3725 10514

$$

PGW

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 26, 1:36 PM MDTSpecial Weather StatementPUB39 min
Jul 26, 1:52 PM MDTFlash Flood WarningPUBLas Animas2 hr
Jul 26, 2:30 PM MDTSpecial Weather StatementPUBCostilla15 min
Jul 26, 3:07 PM MDTFlash Flood WarningPUBHuerfano113 min
Jul 26, 3:25 PM MDTSpecial Weather StatementPUBHuerfano20 min
Jul 26, 3:32 PM MDTFlash Flood Warning Considerable damage threatPUBHuerfano113 min
Jul 26, 4:19 PM MDTSpecial Weather StatementPUBProwers26 min
Jul 26, 4:54 PM MDTFlash Flood Warning Considerable damage threatPUBChaffee, Fremont, Saguache5 hr

Nearby

Flash Flood Warnings in Colorado, 2020Every flash flood warning in 2020

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.