Alert archive / Colorado / Flash Flood Warnings in 2016

Flash Flood Warning 37, NWS Pueblo, CO

August 31, 2016Custer County, Fremont County, Saguache County, Colorado

NWS Pueblo, CO issued this flash flood warning at Aug 31, 2016, 8:37 PM MDT for Custer County, Fremont County, Saguache 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 31, 2016, 8:37 PM MDT (02:37 UTC)
Expired
Aug 31, 2016, 11:30 PM MDT
In force
3 hr
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

Counties Custer County, CO, Fremont County, CO, Saguache County, CO

The radar

The Pueblo radar (KPUX), 136 km from the middle of the area, began a volume at 02:41 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

Grand Junction, CO (KGJT), launched 00:00Z, 2.6 hours before the alert went out and 258 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, Grand Junction, CO at 00:00Z on 2016-09-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 51 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, Grand Junction, CO at 00:00Z on 2016-09-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 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
51 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
3251 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
7 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

308 
WGUS55 KPUB 010237
FFWPUB
COC027-043-109-010530-
/O.NEW.KPUB.FF.W.0037.160901T0237Z-160901T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
837 PM MDT WED AUG 31 2016

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL SAGUACHE COUNTY IN CENTRAL COLORADO...
  SOUTHWESTERN FREMONT COUNTY IN CENTRAL COLORADO...
  NORTHWESTERN CUSTER COUNTY IN SOUTHEASTERN COLORADO...

* UNTIL 1130 PM MDT

* AT 834 PM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT HAVE THE POTENTIAL OF EXPERIENCING FLOODING INCLUDE...
  THE HAYDEN PASS BURN SCAR...
  THE DUCKETT BURN SCAR...COALDALE AND HILLSIDE. 

EXCESSIVE RAINFALL OVER AND NEAR THE BURN SCAR WILL RESULT IN DEBRIS
FLOW MOVING IN AND NEAR THE BURN SCARS.  THE DEBRIS FLOW CAN CONSIST
OF ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3838 10571 3820 10553 3819 10581 3835 10587

$$
1 follow-up statement
289 
WGUS75 KPUB 010410
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
1010 PM MDT WED AUG 31 2016

COC027-043-109-010420-
/O.CAN.KPUB.FF.W.0037.000000T0000Z-160901T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAGUACHE CO-FREMONT CO-CUSTER CO-
1010 PM MDT WED AUG 31 2016

...THE FLASH FLOOD WARNING FOR EAST CENTRAL SAGUACHE...SOUTHWESTERN
FREMONT AND NORTHWESTERN CUSTER COUNTIES 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 3838 10571 3820 10553 3819 10581 3835 10587

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 31, 6:33 PM MDTSpecial Weather StatementPUBBaca87 min
Aug 31, 7:53 PM MDTSpecial Weather StatementPUBCuster82 min
Aug 31, 8:01 PM MDTSpecial Weather StatementPUB89 min
Aug 31, 9:11 PM MDTAreal Flood AdvisoryPUBChaffee3 hr
Aug 31, 9:30 PM MDTSpecial Weather StatementPUBBaca90 min

Nearby

Flash Flood Warnings in Colorado, 2016Every flash flood warning in 2016

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.