Alert archive / Colorado / Flash Flood Warnings in 2021
Flash Flood Warning 10, NWS Goodland, KS
NWS Goodland, KS issued this flash flood warning at May 16, 2021, 6:04 PM MDT for Cheyenne County, Colorado. It was in force for 3 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
- May 16, 2021, 6:04 PM MDT (00:04 UTC)
- Expired
- May 16, 2021, 9:15 PM MDT
- In force
- 3 hr
- Issued by
- NWS Goodland, KS
- Area
- Storm-based polygon
- Flood severity
- None
County Cheyenne County, CO
The radar
The Pueblo radar (KPUX), 113 km from the middle of the area, began a volume at 00:04 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, 0.1 hours before the alert went out and 137 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.
- Mixed-layer CAPE
- 143 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 685 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- -15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
942
WGUS53 KGLD 170004
FFWGLD
COC017-170315-
/O.NEW.KGLD.FF.W.0010.210517T0004Z-210517T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Goodland KS
604 PM MDT Sun May 16 2021
The National Weather Service in Goodland has issued a
* Flash Flood Warning for...
Southwestern Cheyenne County in east central Colorado...
* Until 915 PM MDT.
* At 604 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...Doppler radar.
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 flash flooding include...
mainly rural areas of Southwestern Cheyenne County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3861 10310 3878 10296 3872 10268 3861 10268
FLASH FLOOD...RADAR INDICATED
$$
ANW2 follow-up statements
822
WGUS73 KGLD 170230 RRA
FFSGLD
Flash Flood Statement
National Weather Service Goodland KS
830 PM MDT Sun May 16 2021
COC017-170315-
/O.CON.KGLD.FF.W.0010.000000T0000Z-210517T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cheyenne CO-
830 PM MDT Sun May 16 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM MDT THIS
EVENING FOR SOUTHWESTERN CHEYENNE COUNTY...
At 830 PM MDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
Some locations that will experience flash flooding include...
mainly rural areas of Southwestern Cheyenne County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3861 10310 3878 10296 3872 10268 3861 10268
FLASH FLOOD...RADAR INDICATED
$$
ANW368 WGUS73 KGLD 170307 FFSGLD Flash Flood Statement National Weather Service Goodland KS 907 PM MDT Sun May 16 2021 COC017-170317- /O.EXP.KGLD.FF.W.0010.000000T0000Z-210517T0315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Cheyenne CO- 907 PM MDT Sun May 16 2021 ...FLASH FLOOD WARNING WILL EXPIRE AT 915 PM MDT THIS EVENING FOR SOUTHWESTERN CHEYENNE COUNTY... The heavy rain has ended. Please continue to heed any road closures. LAT...LON 3861 10310 3878 10296 3872 10268 3861 10268 $$ ANW
The office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 6:14 PM MDT | Special Weather Statement | GLD | Cheyenne | 61 min |
| May 16, 6:40 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 35 min |
| May 16, 6:56 PM MDT | Tornado Warning | GLD | Kit Carson | 18 min |
| May 16, 7:07 PM MDT | Special Weather Statement | GLD | Kit Carson | 23 min |
| May 16, 7:10 PM MDT | Special Weather Statement | GLD | Kit Carson | 35 min |
| May 16, 7:10 PM MDT | Tornado Warning | GLD | Cheyenne, Kit Carson | 35 min |
| May 16, 7:16 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 29 min |
| May 16, 7:22 PM MDT | Flash Flood Warning | GLD | Kit Carson | 5 hr |
| May 16, 7:42 PM MDT | Special Weather Statement | GLD | Kit Carson | 63 min |
| May 16, 7:58 PM MDT | Special Weather Statement | GLD | Kit Carson | 47 min |
| May 16, 8:24 PM MDT | Flash Flood Warning | GLD | Kit Carson | 4 hr |
| May 16, 8:39 PM MDT | Special Weather Statement | GLD | Yuma | 66 min |
| May 16, 8:42 PM MDT | Special Weather Statement | GLD | Kit Carson | 78 min |
| May 16, 8:49 PM MDT | Special Weather Statement | GLD | Cheyenne | 71 min |
| May 16, 9:09 PM MDT | Areal Flood Warning | GLD | Cheyenne | 3 hr |
| May 16, 9:52 PM MDT | Special Weather Statement | GLD | Yuma | 53 min |
| May 16, 10:57 PM MDT | Special Weather Statement | GLD | Yuma | 63 min |
| May 17, 12:12 AM MDT | Areal Flood Warning | GLD | Kit Carson | 6 hr |
| May 17, 2:27 PM MDT | Flash Flood Warning | GLD | Yuma | 3 hr |
Nearby
Flash Flood Warnings in Colorado, 2021Every flash flood warning in 2021
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.