Alert archive / Minnesota / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 48, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 18, 2024, 4:27 AM CDT for Richland County, Sargent County, North Dakota; 5 counties in Minnesota. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 18, 2024, 4:27 AM CDT (09:27 UTC)
- Expired
- Jun 18, 2024, 5:30 AM CDT
- In force
- 63 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clay County, MN, Grant County, MN, Otter Tail County, MN, Wadena County, MN, Wilkin County, MN, Richland County, ND, Sargent County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 150 km from the middle of the area, began a volume at 09:30 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 17, 10:42 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 18, 2:08 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 9.5 hours before the alert went out and 230 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
- 917 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 336 m²/s²
- 0-3 km storm-relative helicity
- 482 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 18, 3:51 AM CDT, 36 minutes earlier. Its key messages:
- Scattered severe thunderstorm chances continue this morning along a line of storms and heavy rain. Impacts from severe storms will diminish after around 8am.
- Flash flooding remains possible today as a line of storms and moderate rainfall moves slowly eastward across the area.
- Additional chances for thunderstorms and heavy rain are possible late Thursday through early Saturday.
Area forecast discussion, Jun 18, 3:51 AM CDT, 36 minutes before
Area Forecast Discussion
National Weather Service Grand Forks ND
351 AM CDT Tue Jun 18 2024
.KEY MESSAGES...
- Scattered severe thunderstorm chances continue this morning
along a line of storms and heavy rain. Impacts from severe
storms will diminish after around 8am.
- Flash flooding remains possible today as a line of storms and
moderate rainfall moves slowly eastward across the area.
- Additional chances for thunderstorms and heavy rain are
possible late Thursday through early Saturday.
&&
.DISCUSSION...
Issued at 350 AM CDT Tue Jun 18 2024
...Synopsis...
Southwest flow continues across the Northern Plains and Upper
Midwest, with deep H5 troughing across the Pacific Northwest and
strong H5 ridging over the Eastern CONUS. Ensemble guidance is
somewhat consistent in weakening the eastern ridge very slowly over
the course of the next week or so; however, the timing of this
weakening will strongly determine what impacts we can expect as we
head into the weekend. There is a continued signal for heavy rain
and perhaps a few strong thunderstorms across a good portion of
southeastern North Dakota and west-central Minnesota as another
shortwave develops later this week.
...Scattered Severe Thunderstorms This Morning...
Severe thunderstorm chances will diminish from west to east this
morning, with most of the risk pushing east of the forecast area by
around 8am. Primary impacts will be in the southern Red River Valley
and west-central/northwest Minnesota, and will include thunderstorm
wind gusts as high as 60 mph.
...Moderate Rain Diminishes Slowly Today...
Periods of moderate rainfall have been following a line of storms
through much of the morning. For the Red River Valley westward, most
shower activity is expected to end by around midday; however, points
east could see moderate rain persist into the middle to late
afternoon hours before pushing off to the east.
...Active Pattern Continues Thursday through Saturday...
After a period of relatively quiet weather Wednesday and early
Thursday, another system is expected to bring additional rain and
thunderstorm chances to the area late this week and into the
weekend. The position of the H5 ridge will ultimately determine how
much moisture will be able to work into the Northern Plains, with
most ensemble members showing the potential for mixing ratios
exceeding 12 g/Kg. If the ridge weakens, we would see lower
potential moisture; however, clusters slightly favor a stronger
ridge, which would allow a more direct moisture fetch out of east
Texas. Current probabilities are highest across southeastern North
Dakota and west-central Minnesota, where there is an 80 percent
chance to see 0.50 inch or more rain late Thursday through early
Saturday. Thunderstorm potential exists; however, there is a large
degree of variability in model sounding output at this time. Most
guidance allows for at least a mention of a few elevated storms
capable of reaching minimal severe limits.
&&
.AVIATION /06Z TAFS THROUGH 06Z WEDNESDAY/...
Issued at 1244 AM CDT Tue Jun 18 2024
Showers and thunderstorms are actively increasing in coverage
with a linear thunderstorm complex starting to organize in
south central to northeast ND, while additional activity is
developing east of this complex. Within parts of the line severe
wind gusts (to 60 mph) may be possible, but those impacts are
uncertain at TAF sites. MVFR stratus is starting to spread
east-northeast, a bit slower than earlier guidance, but is
expected to eventually overspread all of eastern ND and
northwest MN becoming IFR Tuesday morning. Low level wind shear
remains a threat as a strong low level jet continues to build
over the region and strengthen early in the TAF period. Winds
eventually shift to the north-northwest as low pressure pushes
east. Guidance keeps low stratus and gusty winds in place into
Tuesday afternoon even after showers/thunderstorms transition
out of the region, but there is a signal for improvement to VFR
and decreasing winds during the evening period Tuesday.
&&
.FGF WATCHES/WARNINGS/ADVISORIES...
ND...Flood Watch through Wednesday morning for NDZ007-008-014>016-
024-026>030-038-039-049-052>054.
MN...Flood Watch through Wednesday morning for MNZ001>009-013>017-
022>024-027>032-040.
&&
DISCUSSION...Lynch
AVIATION...DJRHazardous weather outlook, Jun 17, 6:39 PM CDT, 9 hours 48 minutes before
Hazardous Weather Outlook National Weather Service Grand Forks ND 639 PM CDT Mon Jun 17 2024 NDZ006>008-014-015-054-182345- Towner-Cavalier-Pembina-Benson-Ramsey-Western Walsh- 639 PM CDT Mon Jun 17 2024 This hazardous weather outlook is for portions of eastern North Dakota. .DAY ONE...Tonight Training showers and thunderstorms will bring the threat for flash flooding this evening and overnight. There is a level 1 out of 5 risk for severe thunderstorms for the Devils Lake Basin and adjacent areas. The main hazards will be golf ball size hail and a lower risk for 60 mph winds. Flash flooding is possible. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Tuesday...Flooding Risk. Strong Thunderstorm Risk. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required today. MNZ001>008-013>015-022-027-029-030-040-NDZ016-024-026>030-038-039- 049-052-053-182345- West Polk-Norman-Clay-Kittson-Roseau-Lake Of The Woods- West Marshall-East Marshall-Pennington-Red Lake-East Polk- Mahnomen-West Becker-Wilkin-West Otter Tail-Grant-Eastern Walsh- Eddy-Nelson-Grand Forks-Griggs-Steele-Traill-Barnes-Cass-Ransom- Sargent-Richland- 639 PM CDT Mon Jun 17 2024 This hazardous weather outlook is for portions of eastern North Dakota, west central and northwest Minnesota. .DAY ONE...Tonight Training showers and thunderstorms will bring the threat for flash flooding this evening and overnight. Isolated to scattered severe thunderstorms are possible this evening, overnight, and early Tuesday morning. There is a level 2 out of 5 risk for severe thunderstorms. The main hazards will be golf ball size hail and a lower risk for 70 mph winds. Flash flooding is possible. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Tuesday...Level 2 out of 5 Severe Thunderstorm Risk. Flooding Risk. Thursday and Friday...Flooding Risk. Strong Thunderstorm Risk. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required today. MNZ009-016-017-023-024-028-031-032-182345- North Beltrami-North Clearwater-South Beltrami-South Clearwater- Hubbard-East Becker-East Otter Tail-Wadena- 639 PM CDT Mon Jun 17 2024 This hazardous weather outlook is for portions of west central and northwest Minnesota. .DAY ONE...Tonight Training showers and thunderstorms will bring the threat for flash flooding across the region through Monday and Tuesday. Isolated to scattered severe thunderstorms are possible overnight and Tuesday morning. There is a level 2 out of 5 risk for severe thunderstorms. The main hazards will be ping pong ball size hail and a lower risk for 60 mph winds. Flash flooding is possible. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Tuesday...Level 2 out of 5 Severe Thunderstorm Risk. Flooding Risk. Thursday and Friday...Flooding Risk. Strong Thunderstorm Risk. .SPOTTER INFORMATION STATEMENT... Spotter activation may be required today.
In the hours before
Local storm report, Jun 18, 2:23 AM CDT, 2 hours 4 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
223 AM CDT Tue Jun 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0205 AM Tstm Wnd Gst Englevale 46.40N 97.91W
06/18/2024 M67 MPH Ransom ND Public
Public reported reported 67.3 mph wind gust
off their weather station and shingles have
been blown off the roof.
&&
MMLocal storm report, Jun 18, 2:34 AM CDT, 1 hour 53 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
234 AM CDT Tue Jun 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0216 AM Tstm Wnd Dmg Hillsboro 47.40N 97.06W
06/18/2024 Traill ND Broadcast Media
Media Broadcaster reported Broken branches
of 5" inches in Hillsboro.
&&Local storm report, Jun 18, 2:51 AM CDT, 1 hour 36 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
251 AM CDT Tue Jun 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0220 AM Hail Litchville 46.66N 98.19W
06/18/2024 M1.00 Inch Barnes ND Broadcast Media
Media Broadcaster received a report of
Quarter sized hail in litchville,ND.
&&Local storm report, Jun 18, 3:10 AM CDT, 1 hour 17 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
310 AM CDT Tue Jun 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0301 AM Tstm Wnd Gst Ada 47.30N 96.51W
06/18/2024 M67 MPH Norman MN Mesonet
Measured gust at Ada MN NDAWN 10 ft sensor.
&&Local storm report, Jun 18, 3:43 AM CDT, 44 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
343 AM CDT Tue Jun 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 AM Tstm Wnd Gst Moorhead 46.86N 96.76W
06/18/2024 M60 MPH Clay MN Broadcast Media
Media broadcaster reports 50-60mph winds in
Moorehead.
&&Local storm report, Jun 18, 3:58 AM CDT, 29 minutes before
Preliminary Local Storm Report
National Weather Service Grand Forks ND
358 AM CDT Tue Jun 18 2024
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0356 AM Tstm Wnd Dmg 10 N Moorhead 47.01N 96.76W
06/18/2024 Clay MN Broadcast Media
Media Broadcaster recieved a report for 7
inch branches snapped in rural portion of
the Oakport Township.
&&The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 12:30 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Griggs, Nelson, Ramsey, Steele, Walsh | 45 min |
| Jun 18, 1:00 AM CDT | Special Weather Statement | FGF | Barnes, Griggs, Steele | 30 min |
| Jun 18, 1:10 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 50 min |
| Jun 18, 1:23 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Griggs, Steele, Traill | 52 min |
| Jun 18, 1:54 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 51 min |
| Jun 18, 2:07 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Steele, Traill | 23 min |
| Jun 18, 2:11 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Richland, Sargent | 49 min |
| Jun 18, 2:22 AM CDT | Severe Thunderstorm Warning | FGF | Cass, Steele, Traill | 38 min |
| Jun 18, 2:50 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass, Ransom, Richland, Sargent, Traill | 40 min |
| Jun 18, 2:58 AM CDT | Areal Flood Advisory | FGF | Grand Forks | 6 hr |
| Jun 18, 3:24 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 66 min |
| Jun 18, 3:25 AM CDT | Severe Thunderstorm Warning | FGF | Ransom, Richland, Sargent | 65 min |
| Jun 18, 2:42 AM CDT | Severe Thunderstorm Warning | FGF | Marshall, Pennington, Polk, Red Lake | 63 min |
| Jun 18, 3:19 AM CDT | Flash Flood Warning | FGF | Polk | 6 hr |
| Jun 18, 4:20 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clay, Clearwater, Hubbard, Mahnomen and 3 more | 55 min |
| Jun 18, 5:14 AM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Hubbard, Otter Tail, Wadena | 31 min |
| Jun 18, 10:44 AM CDT | River Flood Watch | FGF | Marshall | 23 hr |
| Jun 18, 10:44 AM CDT | River Flood Watch | FGF | Polk | 19 hr |
| Jun 18, 1:41 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Hubbard | 43 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2024Severe Thunderstorm Warnings in North Dakota, 2024Every severe thunderstorm warning in 2024
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.