Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 19, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 7, 2021, 11:55 PM CDT for Becker County, Otter Tail County, Minnesota. It was in force for 50 min. 3 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 7, 2021, 11:55 PM CDT (04:55 UTC)
- Expired
- Jun 8, 2021, 12:45 AM CDT
- In force
- 50 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Becker County, MN, Otter Tail County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 155 km from the middle of the area, began a volume at 04:56 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 7, 11:55 PM CDT | TSTM WND DMG | 1 Ene Frazee, MN | A LARGE 2 FOOT DIAMETER BIRCH TREE AWAS UPROOTED. TIME ESTIMATED BASED ON RADAR AND NEARBY SENDOR REPORTS. |
| Jun 7, 11:59 PM CDT | TSTM WND GST 69 | 2 S Frazee, MN | MNDOT RWIS MEASURED 69 MPH WIND GUST AT 1159 CDT. |
| Jun 7, 11:59 PM CDT | TSTM WND GST 69 | 2 Sse Frazee, MN | PEAK WIND MEASURED AT A MNDOT RWIS STATION. |
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 7, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 4.9 hours before the alert went out and 262 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
- 2693 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 428 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
464 WUUS53 KFGF 080455 SVRFGF MNC005-111-080545- /O.NEW.KFGF.SV.W.0019.210608T0455Z-210608T0545Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Grand Forks ND 1155 PM CDT Mon Jun 7 2021 The National Weather Service in Grand Forks has issued a * Severe Thunderstorm Warning for... Northeastern Otter Tail County in west central Minnesota... Southeastern Becker County in northwestern Minnesota... * Until 1245 AM CDT. * At 1155 PM CDT, a severe thunderstorm was located near Frazee, or near Detroit Lakes, moving east at 35 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Detroit Lakes, Frazee, Toad Lake, Height Of Land Lake, Osage, Wolf Lake and Rochert. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4670 9587 4694 9588 4697 9516 4663 9517 TIME...MOT...LOC 0455Z 267DEG 30KT 4676 9577 HAIL...<.75IN WIND...60MPH $$ Lynch
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 10:03 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Wilkin | 57 min |
| Jun 7, 10:55 PM CDT | Special Weather Statement | FGF | Clay | 65 min |
| Jun 7, 11:12 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay | 48 min |
| Jun 7, 11:26 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Otter Tail, Wilkin | 64 min |
| Jun 7, 11:47 PM CDT | Special Weather Statement | FGF | Beltrami | 58 min |
| Jun 8, 12:17 AM CDT | Severe Thunderstorm Warning | FGF | Otter Tail, Wadena | 43 min |
| Jun 8, 12:23 AM CDT | Special Weather Statement | FGF | Grant | 67 min |
| Jun 8, 12:34 AM CDT | Special Weather Statement | FGF | Hubbard | 41 min |
| Jun 8, 12:39 AM CDT | Special Weather Statement | FGF | Becker | 36 min |
| Jun 8, 12:54 AM CDT | Special Weather Statement | FGF | Wadena | 36 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.