Alert archive / Colorado / Flash Flood Warnings in 2020

Flash Flood Warning 66, NWS Pueblo, CO

August 28, 2020Baca County, Bent County, Las Animas County, Colorado

NWS Pueblo, CO issued this flash flood warning at Aug 28, 2020, 8:58 PM MDT for Baca County, Bent County, 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 28, 2020, 8:58 PM MDT (02:58 UTC)
Expired
Aug 29, 2020, 12:00 AM MDT
In force
3 hr
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

Counties Baca County, CO, Bent County, CO, Las Animas County, CO

The radar

The Pueblo radar (KPUX), 134 km from the middle of the area, began a volume at 02:59 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

Denver, CO (KDNR), launched 00:00Z, 3.0 hours before the alert went out and 249 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, Denver, CO at 00:00Z on 2020-08-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Denver, CO at 00:00Z on 2020-08-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1513 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted.

472 
WGUS55 KPUB 290258
FFWPUB
COC009-011-071-290600-
/O.NEW.KPUB.FF.W.0066.200829T0258Z-200829T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
858 PM MDT Fri Aug 28 2020

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  Northwestern Baca County in southeastern Colorado...
  East central Las Animas County in southeastern Colorado...
  Southeastern Bent County in southeastern Colorado...

* Until midnight MDT.

* At 857 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to around two inches of rain 
  have already fallen. 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.

* Flash flooding will remain over mainly rural areas of northwestern
  Baca, east central Las Animas and southeastern Bent Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3745 10305 3758 10327 3790 10312 3778 10284

FLASH FLOOD...RADAR INDICATED

$$

Rodriguez
2 follow-up statements
768 
WGUS75 KPUB 290407
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
1007 PM MDT Fri Aug 28 2020

COC009-011-071-290600-
/O.CON.KPUB.FF.W.0066.000000T0000Z-200829T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baca CO-Las Animas CO-Bent CO-
1007 PM MDT Fri Aug 28 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT FOR
NORTHWESTERN BACA...EAST CENTRAL LAS ANIMAS AND SOUTHEASTERN BENT
COUNTIES...

At 1006 PM MDT, Doppler radar indicated thunderstorms producing 
heavy rain across the warned area. Up to two and a half inches of 
rain have already fallen. 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.

Flash flooding will remain over mainly rural areas of northwestern
Baca, east central Las Animas and southeastern Bent Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3745 10305 3758 10327 3790 10312 3778 10284

FLASH FLOOD...RADAR INDICATED

$$

Rodriguez
082 
WGUS75 KPUB 290556
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
1156 PM MDT Fri Aug 28 2020

COC009-011-071-290605-
/O.EXP.KPUB.FF.W.0066.000000T0000Z-200829T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Baca CO-Las Animas CO-Bent CO-
1156 PM MDT Fri Aug 28 2020

...THE FLASH FLOOD WARNING FOR NORTHWESTERN BACA...EAST CENTRAL LAS
ANIMAS AND SOUTHEASTERN BENT COUNTIES WILL EXPIRE AT MIDNIGHT MDT...

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

LAT...LON 3745 10305 3758 10327 3790 10312 3778 10284

$$

Rodriguez

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 6:16 PM MDTFlash Flood Warning Considerable damage threatPUBCostilla, Huerfano3 hr
Aug 28, 7:10 PM MDTSpecial Weather StatementPUBBaca50 min
Aug 28, 7:22 PM MDTSevere Thunderstorm WarningPUBBaca, Las Animas38 min
Aug 28, 8:03 PM MDTSpecial Weather StatementPUBBaca, Bent42 min
Aug 28, 8:45 PM MDTSpecial Weather StatementPUBBent, Prowers45 min
Aug 28, 9:25 PM MDTSpecial Weather StatementPUBProwers50 min
Aug 29, 1:33 PM MDTSpecial Weather StatementPUBLas Animas42 min
Aug 29, 1:45 PM MDTSevere Thunderstorm WarningPUBHuerfano, Pueblo45 min
Aug 29, 1:59 PM MDTSpecial Weather StatementPUBHuerfano46 min
Aug 29, 2:10 PM MDTFlash Flood Warning Considerable damage threatPUBCuster, Pueblo3 hr
Aug 29, 2:23 PM MDTSpecial Weather StatementPUBHuerfano52 min
Aug 29, 2:28 PM MDTSevere Thunderstorm WarningPUBHuerfano, Pueblo19 min
Aug 29, 2:32 PM MDTSpecial Weather StatementPUBLas Animas43 min
Aug 29, 2:49 PM MDTSpecial Weather StatementPUBLas Animas41 min
Aug 29, 3:00 PM MDTSevere Thunderstorm WarningPUBLas Animas45 min
Aug 29, 3:43 PM MDTSpecial Weather StatementPUB47 min
Aug 29, 3:48 PM MDTSevere Thunderstorm WarningPUBLas Animas19 min
Aug 29, 4:04 PM MDTSpecial Weather StatementPUBLas Animas41 min
Aug 29, 4:44 PM MDTSpecial Weather StatementPUBBent46 min

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.