Alert archive / Colorado / Flash Flood Warnings in 2021
Flash Flood Warning 27, NWS Goodland, KS
NWS Goodland, KS issued this flash flood warning at May 29, 2021, 9:03 PM MDT for Yuma County, Colorado. It was in force for 28 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
- May 29, 2021, 9:03 PM MDT (03:03 UTC)
- Expired
- May 29, 2021, 9:31 PM MDT
- In force
- 28 min
- Issued by
- NWS Goodland, KS
- Area
- Storm-based polygon
- Flood severity
- None
County Yuma County, CO
The radar
The Goodland radar (KGLD), 71 km from the middle of the area, began a volume at 03:03 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, 3.1 hours before the alert went out and 78 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
- 278 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 1446 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
939
WGUS53 KGLD 300303
FFWGLD
COC125-300500-
/O.NEW.KGLD.FF.W.0027.210530T0303Z-210530T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Goodland KS
903 PM MDT Sat May 29 2021
The National Weather Service in Goodland has issued a
* Flash Flood Warning for...
Southeastern Yuma County in northeastern Colorado...
* Until 1100 PM MDT.
* At 902 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...
Idalia.
This includes the following highways...
Highway 385 between mile markers 216 and 226.
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.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3983 10243 3968 10243 3969 10219 3986 10221
3985 10221
FLASH FLOOD...RADAR INDICATED
$$
JN1 follow-up statement
121
WGUS73 KGLD 300331
FFSGLD
Flash Flood Statement
National Weather Service Goodland KS
931 PM MDT Sat May 29 2021
COC125-300341-
/O.CAN.KGLD.FF.W.0027.000000T0000Z-210530T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Yuma CO-
931 PM MDT Sat May 29 2021
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN YUMA COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3983 10243 3968 10243 3969 10219 3986 10221
3985 10221
$$
JNThe office that day
Everything else NWS Goodland, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 6:16 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 29 min |
| May 29, 6:42 PM MDT | Severe Thunderstorm Warning | GLD | Kit Carson | 25 min |
| May 29, 6:44 PM MDT | Flash Flood Warning | GLD | Kit Carson | 48 min |
| May 29, 6:51 PM MDT | Special Weather Statement | GLD | Cheyenne | 54 min |
| May 29, 7:09 PM MDT | Special Weather Statement | GLD | Kit Carson | 36 min |
| May 29, 7:34 PM MDT | Areal Flood Warning | GLD | Kit Carson | 63 min |
| May 29, 7:55 PM MDT | Special Weather Statement | GLD | Kit Carson | 65 min |
| May 29, 8:22 PM MDT | Severe Thunderstorm Warning | GLD | Yuma | 23 min |
| May 29, 8:51 PM MDT | Special Weather Statement | GLD | Yuma | 54 min |
| May 30, 1:17 PM MDT | Special Weather Statement | GLD | Kit Carson | 28 min |
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.