Alert archive / Colorado / Flash Flood Warnings in 2016

Flash Flood Warning 28, NWS Pueblo, CO

August 22, 2016Custer County, Fremont County, Saguache County, Colorado

NWS Pueblo, CO issued this flash flood warning at Aug 22, 2016, 3:25 PM MDT for Custer County, Fremont County, Saguache County, Colorado. It was in force for 2 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 22, 2016, 3:25 PM MDT (21:25 UTC)
Expired: Aug 22, 2016, 5:30 PM MDT
In force: 2 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), 137 km from the middle of the area, began a volume at 21:24 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 12:00Z, 9.4 hours before the alert went out and 257 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 8 J/kg
Mixed-layer CIN: -255 J/kg
Mixed-layer LCL: 2615 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: -38 m²/s²
0-3 km storm-relative helicity: -22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

021 
WGUS55 KPUB 222130
FFWPUB
COC027-043-109-222330-
/O.NEW.KPUB.FF.W.0028.160822T2125Z-160822T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PUEBLO CO
325 PM MDT MON AUG 22 2016

THE NATIONAL WEATHER SERVICE IN PUEBLO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN SAGUACHE COUNTY IN CENTRAL COLORADO...
  SOUTHWESTERN FREMONT COUNTY IN CENTRAL COLORADO...
  NORTHWESTERN CUSTER COUNTY IN SOUTHEASTERN COLORADO...
  IN PARTICULAR...THE HAYDEN PASS BURN SCAR AREA...

* UNTIL 530 PM MDT

* AT 325 PM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
  COALDALE.

EXCESSIVE RAINFALL OVER THE BURN SCAR MAY RESULT IN DEBRIS FLOW
MOVING THROUGH THE HAYDEN PASS SCAR DRAINAGES. 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.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...FARMLAND...AND OTHER LOW LYING
SPOTS.

MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE-THREATENING FLOODING OF
CREEKS...ROADS AND NORMALLY DRY ARROYOS IS LIKELY. THE HEAVY RAINS
WILL LIKELY TRIGGER ROCKSLIDES...MUDSLIDES AND DEBRIS FLOWS IN STEEP
TERRAIN...ESPECIALLY IN AND AROUND THESE AREAS.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 3838 10575 3832 10567 3824 10561 3822 10565
      3825 10573 3826 10581 3830 10585 3834 10583

$$

LW

3 follow-up statements

687 
WGUS75 KPUB 222228
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
421 PM MDT MON AUG 22 2016

COC027-043-109-222330-
/O.CON.KPUB.FF.W.0028.000000T0000Z-160822T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAGUACHE CO-FREMONT CO-CUSTER CO-
421 PM MDT MON AUG 22 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM MDT FOR
NORTHEASTERN SAGUACHE...SOUTHWESTERN FREMONT AND NORTHWESTERN CUSTER
COUNTIES...FOR THE HAYDEN PASS BURN SCAR AREA...

AT 421 PM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE WARNED AREA.  FLASH FLOODING IS EXPECTED TO BEGIN
SHORTLY.

EXCESSIVE RAINFALL OVER THE BURN SCAR WILL RESULT IN DEBRIS FLOW
MOVING THROUGH THE HAYDEN PASS BURN SCAR DRAINAGES. THE DEBRIS FLOW
CAN CONSIST OF ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.

SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
COALDALE.

SOME OF THE DRAINAGES THAT MAY BE IMPACTED INCLUDE...OAK
CREEK...SOUTH LAKE CREEK...PINEY CREEK...BRUSH CREEK...SAN LUIS
CREEK...LITTLE COTTONWOOD CREEK...HAYDEN PASS CREEK...SHORT
CREEK...TEXAS CREEK...BIG COTTONWOOD CREEK...SULLIVAN CREEK...MIDDLE
PRONG HAYDEN CREEK AND BUTTER CREEK.

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.

REMAIN ALERT FOR FLOODING EVEN IN LOCATIONS NOT RECEIVING RAIN.
ARROYOS...STREAMS...AND RIVERS CAN BECOME RAGING KILLER CURRENTS IN A
MATTER OF MINUTES...EVEN FROM DISTANT RAINFALL.

MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE-THREATENING FLOODING OF
CREEKS...ROADS AND NORMALLY DRY ARROYOS IS LIKELY. THE HEAVY RAINS
WILL LIKELY TRIGGER ROCKSLIDES...MUDSLIDES AND DEBRIS FLOWS IN STEEP
TERRAIN...ESPECIALLY IN AND AROUND THESE AREAS.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 3838 10575 3832 10567 3824 10561 3822 10565
      3825 10573 3826 10581 3830 10585 3834 10583

$$

LW

214 
WGUS75 KPUB 222311
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
505 PM MDT MON AUG 22 2016

COC027-043-109-222330-
/O.CON.KPUB.FF.W.0028.000000T0000Z-160822T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAGUACHE CO-FREMONT CO-CUSTER CO-
505 PM MDT MON AUG 22 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM MDT FOR
NORTHEASTERN SAGUACHE...SOUTHWESTERN FREMONT AND NORTHWESTERN CUSTER
COUNTIES...FOR THE HAYDEN PASS BURN SCAR AREA...

AT 505 PM MDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA.  FLASH FLOODING IS POSSIBLE.

EXCESSIVE RAINFALL OVER THE BURN SCAR MAY RESULT IN DEBRIS FLOW
MOVING THROUGH THE HAYDEN PASS BURN SCAR AREA. THE DEBRIS FLOW CAN
CONSIST OF ROCK...MUD...VEGETATION AND OTHER LOOSE MATERIALS.

SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
HAYDEN CREEK...WOLF CREEK...COTTONWOOD CREEK...BUTTER CREEK...
LITTLE COTTONWOOD CREEK AND COALDALE.

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.

REMAIN ALERT FOR FLOODING EVEN IN LOCATIONS NOT RECEIVING RAIN.
ARROYOS...STREAMS...AND RIVERS CAN BECOME RAGING KILLER CURRENTS IN A
MATTER OF MINUTES...EVEN FROM DISTANT RAINFALL.

MOVE AWAY FROM RECENTLY BURNED AREAS. LIFE-THREATENING FLOODING OF
CREEKS...ROADS AND NORMALLY DRY ARROYOS IS LIKELY. THE HEAVY RAINS
WILL LIKELY TRIGGER ROCKSLIDES...MUDSLIDES AND DEBRIS FLOWS IN STEEP
TERRAIN...ESPECIALLY IN AND AROUND THESE AREAS.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 3838 10575 3832 10567 3824 10561 3822 10565
      3825 10573 3826 10581 3830 10585 3834 10583

$$

LW

014 
WGUS75 KPUB 222340
FFSPUB

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PUEBLO CO
536 PM MDT MON AUG 22 2016

COC027-043-109-222346-
/O.EXP.KPUB.FF.W.0028.000000T0000Z-160822T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAGUACHE CO-FREMONT CO-CUSTER CO-
536 PM MDT MON AUG 22 2016

...THE FLASH FLOOD WARNING FOR NORTHEASTERN SAGUACHE...SOUTHWESTERN
FREMONT AND NORTHWESTERN CUSTER COUNTIES HAS EXPIRED...

THE HEAVY RAIN HAS DECREASED. FLOODING IS NO LONGER EXPECTED TO POSE
A THREAT. PLEASE CONTINUE TO AVOID DRIVING THROUGH WATER OVER
ROADWAYS.

LAT...LON 3838 10575 3832 10567 3824 10561 3822 10565
      3825 10573 3826 10581 3830 10585 3834 10583

$$

LW

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 22, 2:39 PM MDT	Areal Flood Advisory	PUB	Rio Grande	2 hr
Aug 22, 2:52 PM MDT	Special Weather Statement	PUB	Fremont	68 min
Aug 22, 3:13 PM MDT	Special Weather Statement	PUB	El Paso	62 min

Nearby

Flash Flood Warnings in Colorado, 2016 Every 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.