Alert archive / Colorado / Flash Flood Warnings in 2017

Flash Flood Warning 27, NWS Pueblo, CO

July 18, 2017El Paso County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 18, 2017, 5:01 PM MDT for El Paso County, Colorado. It was in force for 119 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 18, 2017, 5:01 PM MDT (23:01 UTC)
Expired
Jul 18, 2017, 7:00 PM MDT
In force
119 min
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

County El Paso County, CO

The radar

The Pueblo radar (KPUX), 58 km from the middle of the area, began a volume at 23:02 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.

What was reported inside it

TimeReportWhereRemark
Jul 18, 5:15 PM MDTHEAVY RAIN 0.791 Nw Peterson Afb, CO
Jul 18, 5:20 PM MDTHEAVY RAIN 2.941 Ne Security, COFELL IN ABOUT 30 MINUTES.
Jul 18, 5:47 PM MDTHEAVY RAIN 2.372 N Security, CO
Jul 18, 6:11 PM MDTHEAVY RAIN 0.42 S Peterson Afb, CO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 11.0 hours before the alert went out and 173 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 12:00Z on 2017-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2017-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2651 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
8 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

106 
WGUS55 KPUB 182301
FFWPUB
COC041-190100-
/O.NEW.KPUB.FF.W.0027.170718T2301Z-170719T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
501 PM MDT TUE JUL 18 2017

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  Central El Paso County in east central Colorado...

* Until 700 PM MDT

* At 459 PM MDT, Doppler radar indicated heavy rain across the 
  warned area. Up to one and a half inches of rain has already 
  fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Southeastern Colorado Springs, Fountain, Stratmoor, Fort Carson,
  Security, Peterson AFB, Security-Widefield and Cimarron Hills.

Additional rainfall amounts of 1 inch are possible in the warned 
area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3884 10464 3873 10463 3874 10480 3885 10476

$$

tlm
4 follow-up statements
560 
WGUS75 KPUB 182318
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
518 PM MDT TUE JUL 18 2017

COC041-190100-
/O.CON.KPUB.FF.W.0027.000000T0000Z-170719T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
El Paso CO-
518 PM MDT TUE JUL 18 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR
CENTRAL EL PASO COUNTY...

At 516 PM MDT, Doppler radar indicated moderate to heavy rain across 
the warned area. Around two inches of rain have already fallen. 

Some locations that will experience flooding include...
Southeastern Colorado Springs, Fountain, Stratmoor, Fort Carson,
Security, Peterson AFB, Security-Widefield and Cimarron Hills.

Additional rainfall amounts of one half inch are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3884 10464 3873 10463 3874 10480 3885 10476

$$

tlm
366 
WGUS75 KPUB 182336
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
536 PM MDT TUE JUL 18 2017

COC041-190100-
/O.CON.KPUB.FF.W.0027.000000T0000Z-170719T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
El Paso CO-
536 PM MDT TUE JUL 18 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR
CENTRAL EL PASO COUNTY...

At 535 PM MDT, trained weather spotters reported flash flooding in 
the Security area. Up to three inches of rain have already fallen.
Flash flooding is already occurring on Security streets.

Some locations that will experience flooding include...
Southeastern Colorado Springs, and Security-Widefield.

Additional rainfall amounts of 1/4 inch are possible in the warned 
area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3884 10464 3873 10463 3874 10480 3885 10476

$$

TLM
672 
WGUS75 KPUB 190001
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
601 PM MDT TUE JUL 18 2017

COC041-190100-
/O.CON.KPUB.FF.W.0027.000000T0000Z-170719T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
El Paso CO-
601 PM MDT TUE JUL 18 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR
CENTRAL EL PASO COUNTY...

At 559 PM MDT, Doppler radar indicated only light rain across the 
warned area. Deep water was still likely in poor drainage areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3884 10464 3873 10463 3874 10480 3885 10476

$$

tlm
771 
WGUS75 KPUB 190031
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
631 PM MDT TUE JUL 18 2017

COC041-190040-
/O.CAN.KPUB.FF.W.0027.000000T0000Z-170719T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
El Paso CO-
631 PM MDT TUE JUL 18 2017

...THE FLASH FLOOD WARNING FOR CENTRAL EL PASO COUNTY IS CANCELLED...

Flood waters have receded. 

LAT...LON 3884 10464 3873 10463 3874 10480 3885 10476

$$

tlm

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 17, 6:14 PM MDTSpecial Weather StatementPUBEl Paso31 min
Jul 17, 6:30 PM MDTSpecial Weather StatementPUBEl Paso45 min
Jul 17, 6:35 PM MDTSpecial Weather StatementPUBPueblo25 min
Jul 17, 6:54 PM MDTAreal Flood AdvisoryPUBEl Paso111 min
Jul 17, 7:11 PM MDTSpecial Weather StatementPUBEl Paso34 min
Jul 18, 2:19 PM MDTSpecial Weather StatementPUBPueblo41 min
Jul 18, 4:45 PM MDTSpecial Weather StatementPUBEl Paso45 min
Jul 18, 4:46 PM MDTAreal Flood AdvisoryPUBFremont3 hr
Jul 18, 4:52 PM MDTSpecial Weather StatementPUBSaguache23 min
Jul 18, 4:53 PM MDTSpecial Weather StatementPUBFremont52 min
Jul 18, 5:30 PM MDTAreal Flood AdvisoryPUBEl Paso2 hr

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.