Alert archive / Colorado / Flash Flood Warnings in 2018

Flash Flood Warning 26, NWS Pueblo, CO

July 24, 2018Costilla County, Huerfano County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 24, 2018, 5:56 PM MDT for Costilla County, Huerfano County, Colorado. It was in force for 3 hr. 1 report 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 24, 2018, 5:56 PM MDT (23:56 UTC)
Expired
Jul 24, 2018, 8:45 PM MDT
In force
3 hr
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

Counties Costilla County, CO, Huerfano County, CO

The radar

The Pueblo radar (KPUX), 131 km from the middle of the area, began a volume at 23:55 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 24, 6:57 PM MDTFLASH FLOOD5 Se Red Wing, COMAJOR FLOODING ON PASS CREEK. AT MM 3, 15 ACRE MEADOW IS MOVING WITH WATER, LOGS, AND DEBRIS.

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, 11.9 hours before the alert went out and 305 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 2018-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 458 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 12:00Z on 2018-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -2 square meters per square second.19395878Sfc1 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
458 J/kg
Mixed-layer CIN
-226 J/kg
Mixed-layer LCL
935 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-2 m²/s²
0-3 km storm-relative helicity
6 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

281 
WGUS55 KPUB 242356
FFWPUB
COC023-055-250245-
/O.NEW.KPUB.FF.W.0026.180724T2356Z-180725T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
556 PM MDT TUE JUL 24 2018

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  Southwestern Huerfano County in southeastern Colorado...
  Northeastern Costilla County in south central Colorado...

* Until 845 PM MDT.

* At 551 PM MDT, Doppler radar indicated thunderstorms producing 
  heavy rain just north of Red Wing. The rain is moving southeast at 
  20 mph. Up to one inch of rain has already fallen across northern 
  portions of the Spring Burn Scar.  This new storm is expected to 
  impact the same areas and continue to move southward across 
  southern portions of the burn scar. Flash flooding is expected to 
  begin shortly.

* Some locations that will experience flooding include...
  spring Burn scar, La Veta and La Veta Pass. 

Excessive rainfall over the Spring Burn scar will result in debris 
flow moving through Pass Creek, South Oak Creek Yellowstone Creek on 
the north side.  Additional flooding is likely across southern 
portions of the Spring burn scar including highway 160 as this storm 
continues moving outhward.  The debris flow can consist of rock, 
mud, vegetation and other loose materials.

Additional rainfall amounts of up to an 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.

Move to higher ground now. Act quickly to protect your life.

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.

&&

LAT...LON 3770 10531 3776 10515 3769 10498 3739 10502
      3739 10516 3743 10529

$$

KT
4 follow-up statements
320 
WGUS75 KPUB 250045
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
645 PM MDT TUE JUL 24 2018

COC023-055-250245-
/O.CON.KPUB.FF.W.0026.000000T0000Z-180725T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-Costilla CO-
645 PM MDT TUE JUL 24 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM MDT FOR
SOUTHWESTERN HUERFANO AND NORTHEASTERN COSTILLA COUNTIES...

At 634 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. The strongest storm was located 3 miles 
west of La Veta Pass and was headed towards the Forbes Park area. 
This storm may cross the ridge and impact South Middle Creek, Oak 
Creek and Indian Creek if the storm holds together. Another strong 
storm was located 4 miles south of Gardner and will affect the 
northern portions of the burn scar. Both of these storms were moving 
south at 10 to 15 mph and are expected to most heavily impact the 
northern and western portions of the burn scar. Up to one inch of 
rain has already fallen across northern portions of the burn scar. 
Flash flooding is expected to begin shortly across portions of 
western and southern portions of the burn scar.

Excessive rainfall over the burn scar will result in debris flows 
moving through the Pass Creek, South Oak Creek, and Yellowstone 
Creek as well as the Forbes Park area. The debris flows can consist 
of rock, mud, vegetation and other loose materials.

Some locations that will experience flooding include...
Spring Burn Scar, La Veta and La Veta Pass. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. Act quickly to protect your life.

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.

&&

LAT...LON 3770 10531 3776 10515 3769 10498 3739 10502
      3739 10516 3743 10529

$$

KT
218 
WGUS75 KPUB 250135
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
735 PM MDT TUE JUL 24 2018

COC023-055-250245-
/O.CON.KPUB.FF.W.0026.000000T0000Z-180725T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-Costilla CO-
735 PM MDT TUE JUL 24 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM MDT FOR
SOUTHWESTERN HUERFANO AND NORTHEASTERN COSTILLA COUNTIES...

At 730 PM MDT, trained weather spotters reported flash flooding 
along Pass Creek in the northern portions of the Spring burn scar. 
Up to one inch of rain has already fallen in this area. 
Thundrestorms also moved across the Forbes Park area and southeast 
portions of the burn scar where radar estimated between a quarter to 
three quarters of an inch has fallen.  

Excessive rainfall over the burn scar will result in debris flow 
moving through Pass Creek, Oak Creek, Yellowstone Creek, Wagon 
Creek, South Middle Creek, Indian Creek, and Rilling Creek.  The 
debris flows can consist of rock, mud, vegetation and other loose 
materials.

Some locations that will experience flooding include...
Spring burn scar, La Veta and La Veta Pass. 


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. Act quickly to protect your life.

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.

&&

LAT...LON 3770 10531 3776 10515 3769 10498 3739 10502
      3739 10516 3743 10529

$$

KT
761 
WGUS75 KPUB 250140 CCA
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
740 PM MDT TUE JUL 24 2018

COC023-055-250245-
/O.COR.KPUB.FF.W.0026.000000T0000Z-180725T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-Costilla CO-
740 PM MDT TUE JUL 24 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM MDT FOR
SOUTHWESTERN HUERFANO AND NORTHEASTERN COSTILLA COUNTIES...

At 738 PM MDT, trained weather spotters reported flash flooding 
along Pass Creek in the northern portions of the Spring burn scar. 
Up to one inch of rain has already fallen in this area. 
Thunderstorms also moved across the Forbes Park area and southeast 
portions of the burn scar where radar estimated between a quarter to 
three quarters of an inch has fallen.  

Excessive rainfall over the burn scar will result in debris flow 
moving through Pass Creek, Oak Creek, Yellowstone Creek, Wagon 
Creek, South Middle Creek, Indian Creek, and Rilling Creek.  The 
debris flows can consist of rock, mud, vegetation and other loose 
materials.

Some locations that will experience flooding include...
Spring burn scar, La Veta and La Veta Pass. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. Act quickly to protect your life.

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.

&&

LAT...LON 3770 10531 3776 10515 3769 10498 3739 10502
      3739 10516 3743 10529

$$

KT
973 
WGUS75 KPUB 250236
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
836 PM MDT TUE JUL 24 2018

COC023-055-250245-
/O.EXP.KPUB.FF.W.0026.000000T0000Z-180725T0245Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-Costilla CO-
836 PM MDT TUE JUL 24 2018

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN HUERFANO AND NORTHEASTERN
COSTILLA COUNTIES WILL EXPIRE AT 845 PM 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 3770 10531 3776 10515 3769 10498 3739 10502
      3739 10516 3743 10529

$$

KT

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 6:11 PM MDTFlash Flood WarningPUBPueblo110 min
Jul 23, 6:21 PM MDTFlash Flood WarningPUBCuster, Fremont, Pueblo114 min
Jul 23, 6:28 PM MDTSevere Thunderstorm WarningPUBLas Animas, Otero46 min
Jul 23, 6:30 PM MDTSevere Thunderstorm WarningPUBCuster, Fremont, Huerfano, Pueblo45 min
Jul 23, 6:56 PM MDTSevere Thunderstorm WarningPUBBaca, Bent, Las Animas, Otero49 min
Jul 23, 7:31 PM MDTAreal Flood AdvisoryPUBBent, Crowley, Las Animas, Otero3 hr
Jul 23, 7:38 PM MDTFlash Flood WarningPUBBent, Crowley, Otero3 hr
Jul 23, 7:52 PM MDTSpecial Weather StatementPUBBent23 min
Jul 23, 8:14 PM MDTFlash Flood WarningPUBCuster, Fremont, Pueblo61 min
Jul 23, 8:34 PM MDTAreal Flood AdvisoryPUBBent, Kiowa, Prowers3 hr
Jul 23, 8:53 PM MDTFlash Flood WarningPUBBent, Prowers3 hr
Jul 23, 9:12 PM MDTFlash Flood WarningPUBKiowa, Prowers3 hr
Jul 23, 9:28 PM MDTSpecial Weather StatementPUBProwers47 min
Jul 23, 10:02 PM MDTFlash Flood WarningPUBFremont, Pueblo104 min
Jul 23, 11:38 PM MDTAreal Flood AdvisoryPUBCuster, Fremont, Pueblo2 hr
Jul 24, 9:44 AM MDTFlash Flood WatchPUBAlamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 4 more12 hr
Jul 24, 2:09 PM MDTFlash Flood WarningPUBCostilla, Huerfano3 hr
Jul 24, 2:25 PM MDTSpecial Weather StatementPUBConejos35 min
Jul 24, 2:27 PM MDTSpecial Weather StatementPUBChaffee48 min
Jul 24, 2:32 PM MDTSpecial Weather StatementPUBEl Paso43 min
Jul 24, 2:35 PM MDTSpecial Weather StatementPUBCostilla40 min
Jul 24, 2:40 PM MDTSevere Thunderstorm WarningPUBEl Paso35 min
Jul 24, 2:44 PM MDTSpecial Weather StatementPUBFremont46 min
Jul 24, 2:46 PM MDTSpecial Weather StatementPUBCuster44 min
Jul 24, 2:54 PM MDTAreal Flood AdvisoryPUBEl Paso3 hr
Jul 24, 3:07 PM MDTFlash Flood WarningPUBEl Paso90 min
Jul 24, 3:07 PM MDTSevere Thunderstorm WarningPUBFremont23 min
Jul 24, 3:14 PM MDTSevere Thunderstorm WarningPUBEl Paso31 min
Jul 24, 3:15 PM MDTSpecial Weather StatementPUBTeller45 min
Jul 24, 3:20 PM MDTSevere Thunderstorm WarningPUBCuster, Huerfano16 min
Jul 24, 3:25 PM MDTSevere Thunderstorm WarningPUBHuerfano, Las Animas50 min
Jul 24, 3:25 PM MDTSevere Thunderstorm WarningPUBEl Paso, Teller35 min
Jul 24, 3:28 PM MDTFlash Flood WarningPUBCuster, Fremont, Saguache2 hr
Jul 24, 3:41 PM MDTSpecial Weather StatementPUBEl Paso49 min
Jul 24, 3:46 PM MDTSpecial Weather StatementPUBCuster44 min
Jul 24, 3:49 PM MDTFlash Flood WarningPUBEl Paso, Teller51 min
Jul 24, 4:07 PM MDTSevere Thunderstorm WarningPUBEl Paso, Teller26 min
Jul 24, 4:14 PM MDTSevere Thunderstorm WarningPUBCuster, Fremont, Huerfano, Pueblo, Saguache31 min
Jul 24, 4:46 PM MDTSevere Thunderstorm WarningPUBCuster, Huerfano44 min
Jul 24, 4:52 PM MDTSevere Thunderstorm WarningPUBEl Paso, Teller38 min
Jul 24, 4:53 PM MDTSpecial Weather StatementPUBHuerfano37 min
Jul 24, 4:57 PM MDTSevere Thunderstorm WarningPUBHuerfano, Las Animas22 min
Jul 24, 5:06 PM MDTFlash Flood WarningPUBTeller2 hr
Jul 24, 5:30 PM MDTFlash Flood WarningPUBCuster, Fremont105 min
Jul 24, 5:49 PM MDTSpecial Weather StatementPUBHuerfano41 min

Nearby

Flash Flood Warnings in Colorado, 2018Every flash flood warning in 2018

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.