Alert archive / Colorado / Flash Flood Warnings in 2018

Flash Flood Warning 4, NWS Pueblo, CO

July 11, 2018Huerfano County, Colorado

NWS Pueblo, CO issued this flash flood warning at Jul 11, 2018, 12:37 PM MDT for Huerfano 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
Jul 11, 2018, 12:37 PM MDT (18:37 UTC)
Expired
Jul 11, 2018, 2:46 PM MDT
In force
2 hr
Issued by
NWS Pueblo, CO
Area
Storm-based polygon
Flood severity
None

County Huerfano County, CO

The radar

The Pueblo radar (KPUX), 124 km from the middle of the area, began a volume at 18:40 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 (KDEN), launched 12:00Z, 6.6 hours before the alert went out and 300 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 2018-07-11Temperature 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 2018-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
2872 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

549 
WGUS55 KPUB 111837
FFWPUB
COC055-112130-
/O.NEW.KPUB.FF.W.0004.180711T1837Z-180711T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Pueblo CO
1237 PM MDT WED JUL 11 2018

The National Weather Service in Pueblo has issued a

* Flash Flood Warning for...
  Central Huerfano County in southeastern Colorado...

* Until 330 PM MDT.

* At 1236 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is expected to
  begin shortly.

* Some locations that will experience flooding include...
  La Veta.

LAT...LON 3760 10495 3747 10499 3755 10515 3761 10513

$$

KTS
5 follow-up statements
025 
WGUS75 KPUB 111840
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
1240 PM MDT WED JUL 11 2018

COC055-112130-
/O.CON.KPUB.FF.W.0004.000000T0000Z-180711T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
1240 PM MDT WED JUL 11 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MDT FOR
CENTRAL HUERFANO COUNTY...

At 1240 PM MDT, Doppler radar indicated thunderstorms producing 
heavy rain across the warned area.  Flash flooding is expected to 
begin over the Spring Fire burn scar shortly.

Some locations that will experience flooding include...
La Veta.

LAT...LON 3760 10495 3747 10499 3755 10515 3761 10513

$$

KTS
119 
WGUS75 KPUB 111929
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
129 PM MDT WED JUL 11 2018

COC055-112130-
/O.CON.KPUB.FF.W.0004.000000T0000Z-180711T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
129 PM MDT WED JUL 11 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MDT FOR
CENTRAL HUERFANO COUNTY...

At 127 PM MDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. 0.63 inches of rain have fallen at the 
Tres Valles IRAWS. Flash flooding is expected over the Spring Fire 
Burn Scar.

Some locations that will experience flooding include...
La Veta.

LAT...LON 3760 10495 3747 10499 3755 10515 3761 10513

$$

KTS
239 
WGUS75 KPUB 111952
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
152 PM MDT WED JUL 11 2018

COC055-112130-
/O.CON.KPUB.FF.W.0004.000000T0000Z-180711T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
152 PM MDT WED JUL 11 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MDT FOR
CENTRAL HUERFANO COUNTY...

0.63 inches of rain have fallen at the Tres Valles IRAWS. Flash 
flooding is expected over the Spring Fire Burn Scar. Thunderstorms 
have moved out of the Flash Flood Warning region, but flash flooding 
is still possible due to water moving down the mountain side.

Some locations that will experience flooding include...
La Veta.

LAT...LON 3760 10495 3747 10499 3755 10515 3761 10513

$$

KTS
124 
WGUS75 KPUB 112018
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
218 PM MDT WED JUL 11 2018

COC055-112130-
/O.CON.KPUB.FF.W.0004.000000T0000Z-180711T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
218 PM MDT WED JUL 11 2018

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MDT FOR
CENTRAL HUERFANO COUNTY...

0.63 inches of rain have fallen at the Tres Valles IRAWS. Flash 
flooding is expected over the Spring Fire Burn Scar. Thunderstorms 
have moved out of the Flash Flood Warning region, but flash flooding 
is still possible due to water moving down the mountain side.

Some locations that will experience flooding include...
La Veta.

LAT...LON 3760 10495 3747 10499 3755 10515 3761 10513

$$

KTS
976 
WGUS75 KPUB 112046
FFSPUB

Flash Flood Statement
National Weather Service Pueblo CO
246 PM MDT WED JUL 11 2018

COC055-112055-
/O.CAN.KPUB.FF.W.0004.000000T0000Z-180711T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Huerfano CO-
246 PM MDT WED JUL 11 2018

...THE FLASH FLOOD WARNING FOR CENTRAL HUERFANO COUNTY 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 3760 10495 3747 10499 3755 10515 3761 10513

$$

KTS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 4:03 AM MDTFlash Flood WatchPUBAlamosa, Chaffee, Costilla, Custer, Fremont, Huerfano and 3 more40 hr
Jul 11, 11:18 AM MDTSpecial Weather StatementPUBCostilla42 min
Jul 11, 1:22 PM MDTSpecial Weather StatementPUBLas Animas38 min
Jul 11, 2:15 PM MDTSpecial Weather StatementPUBOtero30 min
Jul 11, 4:22 PM MDTSpecial Weather StatementPUBBent23 min
Jul 11, 4:49 PM MDTSpecial Weather StatementPUBBent41 min
Jul 11, 5:07 PM MDTSpecial Weather StatementPUBKiowa23 min
Jul 11, 5:09 PM MDTSpecial Weather StatementPUBTeller36 min
Jul 11, 5:31 PM MDTSpecial Weather StatementPUBKiowa44 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.