Alert archive / Colorado / Flash Flood Warnings in 2020

Flash Flood Warning 13, NWS Goodland, KS

July 3, 2020Kit Carson County, Colorado

NWS Goodland, KS issued this flash flood warning at Jul 3, 2020, 7:34 PM MDT for Kit Carson County, Colorado. It was in force for 99 min. 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 3, 2020, 7:34 PM MDT (01:34 UTC)
Expired
Jul 3, 2020, 9:13 PM MDT
In force
99 min
Issued by
NWS Goodland, KS
Area
Storm-based polygon
Flood severity
None

County Kit Carson County, CO

The radar

The Goodland radar (KGLD), 105 km from the middle of the area, began a volume at 01:37 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 (KDNR), launched 00:00Z, 1.6 hours before the alert went out and 57 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 00:00Z on 2020-07-04Temperature 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 00:00Z on 2020-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 square meters per square second.193958Sfc1 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
2725 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

064 
WGUS53 KGLD 040134
FFWGLD
COC063-040430-
/O.NEW.KGLD.FF.W.0013.200704T0134Z-200704T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Goodland KS
734 PM MDT Fri Jul 3 2020

The National Weather Service in Goodland has issued a

* Flash Flood Warning for...
  Northwestern Kit Carson County in east central Colorado...

* Until 1030 PM MDT.

* At 734 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Flash flooding is ongoing or
  expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar indicated.

  IMPACT...Flooding of small creeks and streams, urban areas, 
           highways, streets and underpasses as well as other 
           drainage and low lying areas.

* Some locations that will experience flooding include...
  Stratton, Flagler, Seibert and Vona. 

This includes Interstate 70 in Colorado between mile markers 391 and
420.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3956 10315 3957 10258 3919 10258 3918 10315

FLASH FLOOD...RADAR INDICATED

$$

JN
3 follow-up statements
907 
WGUS73 KGLD 040152
FFSGLD

Flash Flood Statement
National Weather Service Goodland KS
752 PM MDT Fri Jul 3 2020

COC063-040430-
/O.CON.KGLD.FF.W.0013.000000T0000Z-200704T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kit Carson CO-
752 PM MDT Fri Jul 3 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM MDT FOR
NORTHWESTERN KIT CARSON COUNTY...

At 752 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area.  Flash flooding is ongoing or expected
to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flooding of small creeks and streams, urban areas, 
         highways, streets and underpasses as well as other drainage 
         and low lying areas.

Some locations that will experience flooding include...
Stratton, Flagler, Seibert and Vona. 

This includes Interstate 70 in Colorado between mile markers 391 and
420.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3956 10315 3957 10258 3919 10258 3918 10315

FLASH FLOOD...RADAR INDICATED

$$

JN
623 
WGUS73 KGLD 040211
FFSGLD

Flash Flood Statement
National Weather Service Goodland KS
811 PM MDT Fri Jul 3 2020

COC063-040430-
/O.CON.KGLD.FF.W.0013.000000T0000Z-200704T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kit Carson CO-
811 PM MDT Fri Jul 3 2020

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM MDT FOR
NORTHWESTERN KIT CARSON COUNTY...

At 809 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area.  Flash flooding is ongoing or expected
to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flooding of small creeks and streams, urban areas, 
         highways, streets and underpasses as well as other drainage 
         and low lying areas. Kit Carson Dispatch has reported cars 
         off Interstate 70 from Seibert to Flagler due to 
         hydroplaning.

Some locations that will experience flooding include...
Stratton, Flagler, Seibert and Vona. 

This includes Interstate 70 in Colorado between mile markers 391 and
420.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3956 10315 3957 10258 3919 10258 3918 10315

FLASH FLOOD...RADAR INDICATED

$$

JN
191 
WGUS73 KGLD 040313
FFSGLD

Flash Flood Statement
National Weather Service Goodland KS
913 PM MDT Fri Jul 3 2020

COC063-040323-
/O.CAN.KGLD.FF.W.0013.000000T0000Z-200704T0430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Kit Carson CO-
913 PM MDT Fri Jul 3 2020

...THE FLASH FLOOD WARNING FOR NORTHWESTERN KIT CARSON 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 3956 10315 3957 10258 3919 10258 3918 10315

$$

JN

The office that day

Everything else NWS Goodland, KS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 6:27 PM MDTSpecial Weather StatementGLDCheyenne18 min
Jul 3, 6:38 PM MDTSpecial Weather StatementGLDKit Carson22 min
Jul 3, 6:46 PM MDTSpecial Weather StatementGLDCheyenne14 min
Jul 3, 6:56 PM MDTSevere Thunderstorm WarningGLDKit Carson64 min
Jul 3, 7:00 PM MDTSpecial Weather StatementGLDCheyenne30 min
Jul 3, 7:05 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson55 min
Jul 3, 7:25 PM MDTSevere Thunderstorm WarningGLDKit Carson65 min
Jul 3, 8:01 PM MDTSpecial Weather StatementGLDYuma14 min
Jul 3, 8:08 PM MDTSpecial Weather StatementGLDCheyenne37 min
Jul 3, 8:19 PM MDTFlash Flood WarningGLDYuma58 min
Jul 3, 8:20 PM MDTSevere Thunderstorm WarningGLDYuma19 min
Jul 3, 8:38 PM MDTFlash Flood WarningGLDCheyenne36 min
Jul 3, 9:09 PM MDTSevere Thunderstorm WarningGLDCheyenne, Kit Carson46 min
Jul 3, 11:36 PM MDTTornado WarningGLDCheyenne24 min

Nearby

Flash Flood Warnings in Colorado, 2020Every flash flood warning in 2020

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.