Alert archive / Colorado / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 58, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 1, 2021, 3:09 PM MDT for Morgan County, Colorado. It was in force for 36 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
- Jun 1, 2021, 3:09 PM MDT (21:09 UTC)
- Expired
- Jun 1, 2021, 3:45 PM MDT
- In force
- 36 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Morgan County, CO
The radar
The Denver radar (KFTG), 92 km from the middle of the area, began a volume at 21:09 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 12:00Z, 9.2 hours before the alert went out and 83 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1268 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 110 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
180
WUUS55 KBOU 012109
SVRBOU
COC087-012145-
/O.NEW.KBOU.SV.W.0058.210601T2109Z-210601T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Denver CO
309 PM MDT Tue Jun 1 2021
The National Weather Service in Denver Colorado has issued a
* Severe Thunderstorm Warning for...
Northwestern Morgan County in northeastern Colorado...
* Until 345 PM MDT.
* At 309 PM MDT, a severe thunderstorm was located 7 miles north of
Weldona, or 15 miles northwest of Fort Morgan, moving southeast at
15 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Weldona and Jackson Reservoir.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4037 10366 4026 10401 4048 10411 4051 10400
4053 10387 4052 10381
TIME...MOT...LOC 2109Z 334DEG 14KT 4045 10396
HAIL...1.00IN
WIND...<50MPH
$$
SCHLATTER2 follow-up statements
803
WWUS55 KBOU 012127
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
327 PM MDT Tue Jun 1 2021
COC087-012145-
/O.CON.KBOU.SV.W.0058.000000T0000Z-210601T2145Z/
Morgan CO-
327 PM MDT Tue Jun 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM MDT
FOR NORTHWESTERN MORGAN COUNTY...
At 327 PM MDT, a severe thunderstorm was located near Weldona, or 11
miles northwest of Fort Morgan, moving southeast at 15 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
Locations impacted include...
Weldona.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4037 10366 4026 10401 4035 10403 4043 10393
4041 10379
TIME...MOT...LOC 2127Z 334DEG 14KT 4038 10392
HAIL...1.00IN
WIND...<50MPH
$$
SCHLATTER014
WWUS55 KBOU 012135
SVSBOU
Severe Weather Statement
National Weather Service Denver CO
335 PM MDT Tue Jun 1 2021
COC087-012145-
/O.EXP.KBOU.SV.W.0058.000000T0000Z-210601T2145Z/
Morgan CO-
335 PM MDT Tue Jun 1 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN MORGAN COUNTY
WILL EXPIRE AT 345 PM MDT...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.
LAT...LON 4037 10366 4026 10401 4035 10403 4043 10393
4041 10379
TIME...MOT...LOC 2135Z 334DEG 14KT 4035 10390
$$
SCHLATTERThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 1:45 PM MDT | Special Weather Statement | BOU | Weld | 45 min |
| Jun 1, 2:23 PM MDT | Special Weather Statement | BOU | Morgan | 52 min |
| Jun 1, 2:51 PM MDT | Areal Flood Advisory | BOU | Larimer | 62 min |
| Jun 1, 3:32 PM MDT | Special Weather Statement | BOU | Morgan | 28 min |
| Jun 1, 4:06 PM MDT | Special Weather Statement | BOU | Morgan | 39 min |
| Jun 1, 5:19 PM MDT | Special Weather Statement | BOU | Morgan | 26 min |
| Jun 1, 5:41 PM MDT | Special Weather Statement | BOU | Morgan | 34 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 2021Every severe thunderstorm 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.