Alert archive / Montana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 13, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jun 10, 2021, 7:03 PM MDT for Custer County, Rosebud County, Montana. It was in force for 42 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 10, 2021, 7:03 PM MDT (01:03 UTC)
- Expired
- Jun 10, 2021, 7:45 PM MDT
- In force
- 42 min
- Issued by
- NWS Billings, MT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Custer County, MT, Rosebud County, MT
The radar
The Glasgow radar (KGGW), 164 km from the middle of the area, began a volume at 01:06 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 10, 7:30 PM MDT | HAIL 2.5 | 4 N Angela, MT | |
| Jun 10, 7:38 PM MDT | NON-TSTM WND GST 75 | 2 Nw Rock Springs, MT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 10, 2:52 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 1.1 hours before the alert went out and 166 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
- 1762 J/kg
- Mixed-layer CIN
- -194 J/kg
- Mixed-layer LCL
- 1872 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 262 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.5
The text
As transmitted.
979
WUUS55 KBYZ 110103
SVRBYZ
MTC017-087-110145-
/O.NEW.KBYZ.SV.W.0013.210611T0103Z-210611T0145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Billings MT
703 PM MDT Thu Jun 10 2021
The National Weather Service in Billings has issued a
* Severe Thunderstorm Warning for...
Northwestern Custer County in southeastern Montana...
Northern Rosebud County in southeastern Montana...
* Until 745 PM MDT.
* At 703 PM MDT, a severe thunderstorm was located 15 miles south of
Hillside, or 31 miles northeast of Forsyth, moving northeast at 65
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Rock Springs and Angela.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4683 10583 4682 10561 4678 10562 4639 10647
4649 10668 4680 10704 4686 10690 4684 10660
4686 10583
TIME...MOT...LOC 0103Z 215DEG 57KT 4668 10639
HAIL...1.00IN
WIND...60MPH
$$
Setzenfand2 follow-up statements
614
WWUS55 KBYZ 110122
SVSBYZ
Severe Weather Statement
National Weather Service Billings MT
722 PM MDT Thu Jun 10 2021
MTC017-087-110145-
/O.CON.KBYZ.SV.W.0013.000000T0000Z-210611T0145Z/
Custer MT-Rosebud MT-
722 PM MDT Thu Jun 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM MDT
FOR NORTHWESTERN CUSTER AND NORTHERN ROSEBUD COUNTIES...
At 722 PM MDT, a severe thunderstorm was located 14 miles southeast
of Hillside, or 32 miles northwest of Miles City, moving northeast at
55 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Rock Springs and Angela.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4683 10583 4682 10561 4678 10562 4661 10631
4664 10653 4679 10675 4684 10676 4684 10660
4686 10583
TIME...MOT...LOC 0122Z 224DEG 48KT 4683 10612
HAIL...1.00IN
WIND...60MPH
$$
Setzenfand715
WWUS55 KBYZ 110140
SVSBYZ
Severe Weather Statement
National Weather Service Billings MT
740 PM MDT Thu Jun 10 2021
MTC017-087-110148-
/O.EXP.KBYZ.SV.W.0013.000000T0000Z-210611T0145Z/
Custer MT-Rosebud MT-
740 PM MDT Thu Jun 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CUSTER AND
NORTHERN ROSEBUD COUNTIES WILL EXPIRE AT 745 PM MDT...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for
southeastern Montana.
LAT...LON 4683 10583 4682 10561 4678 10562 4661 10631
4664 10653 4679 10675 4684 10676 4684 10660
4686 10583
TIME...MOT...LOC 0138Z 215DEG 57KT 4701 10593
$$
SetzenfandThe office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 6:10 PM MDT | Special Weather Statement | BYZ | Carbon, Stillwater, Sweet Grass | 95 min |
| Jun 10, 6:43 PM MDT | Special Weather Statement | BYZ | Rosebud | 47 min |
| Jun 10, 7:02 PM MDT | Special Weather Statement | BYZ | Yellowstone | 43 min |
| Jun 10, 7:45 PM MDT | Special Weather Statement | BYZ | Carbon, Stillwater, Sweet Grass, Wheatland | 2 hr |
Nearby
Severe Thunderstorm Warnings in Montana, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.