Alert archive / Minnesota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 75, NWS Grand Forks, ND

June 30, 2019Otter Tail County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 30, 2019, 7:30 AM CDT for Otter Tail County, Minnesota. It was in force for 45 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 30, 2019, 7:30 AM CDT (12:30 UTC)
Expired: Jun 30, 2019, 8:15 AM CDT
In force: 45 min
Issued by: NWS Grand Forks, ND
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Otter Tail County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 184 km from the middle of the area, began a volume at 12:32 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 30, 7:34 AM CDT	HAIL 0.88	6 Sse Perham, MN	REPORT POSTED VIA SOCIAL MEDIA. TIME ESTIMATED BASED ON RADAR.
Jun 30, 8:00 AM CDT	HAIL 1	5 Ene New York Mills, MN	DIME TO QUARTER SIZED HAIL FROM SOUTHEAST HOMESTEAD TOWNSHIP INTO SOUTHWEST BLOWERS TOWNSHIP.
Jun 30, 8:10 AM CDT	HAIL 1.25	3 Ne Deer Creek, MN	HAIL COVERED A STRETCH OF CR29 BETWEEN DEER CREEK AND WADENA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 30 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 0.5 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 3310 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1422 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 162 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

289 
WUUS53 KFGF 301230
SVRFGF
MNC111-301315-
/O.NEW.KFGF.SV.W.0075.190630T1230Z-190630T1315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
730 AM CDT Sun Jun 30 2019

The National Weather Service in Grand Forks has issued a

* Severe Thunderstorm Warning for...
  East central Otter Tail County in west central Minnesota...

* Until 815 AM CDT.

* At 729 AM CDT, a severe thunderstorm was located over northeastern
  Ottertail Lake, or 21 miles northeast of Fergus Falls, moving east
  at 30 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...
  Ottertail Lake, New York Mills, Ottertail, Deer Creek, Bluffton,
  Richville and Amor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4631 9575 4650 9575 4664 9516 4637 9516
TIME...MOT...LOC 1229Z 254DEG 25KT 4640 9566 

HAIL...1.00IN
WIND...60MPH
 
$$

Lynch

1 follow-up statement

387 
WWUS53 KFGF 301242
SVSFGF

Severe Weather Statement
National Weather Service Grand Forks ND
742 AM CDT Sun Jun 30 2019

MNC111-301315-
/O.CON.KFGF.SV.W.0075.000000T0000Z-190630T1315Z/
Otter Tail MN-
742 AM CDT Sun Jun 30 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 AM CDT
FOR EAST CENTRAL OTTER TAIL COUNTY...

At 742 AM CDT, a severe thunderstorm was located near Ottertail, or
29 miles east of Fergus Falls, moving east at 35 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...
New York Mills, Ottertail, Deer Creek, Bluffton and northeastern
Ottertail Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4633 9557 4653 9561 4664 9516 4637 9516
TIME...MOT...LOC 1242Z 253DEG 31KT 4644 9549 

HAIL...1.00IN
WIND...60MPH
 
$$

Lynch

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 30, 7:20 AM CDT, 10 minutes earlier.

Area forecast discussion, Jun 30, 7:20 AM CDT, 10 minutes before

Area Forecast Discussion
National Weather Service Grand Forks ND
720 AM CDT Sun Jun 30 2019

.UPDATE...
Issued at 720 AM CDT Sun Jun 30 2019

Adjustments made to account for shower/storm redevelopment in our
south. Confidence is low on coverage, but region of steep mid
level lapse rates/good instability ahead of cold front still
supports possible strong to isolated severe storm development
across southeast ND or west central MN. Still expect this axis to
shift south this morning, but there may be enough lingering
instability through the early evening for low end severe threat.
Best shear/instability is actually this morning.

&&

.SHORT TERM...(Today and tonight)
Issued at 344 AM CDT Sun Jun 30 2019

Early this morning: MCS just within our eastern CWA border with
isolated activity extending east along theta-e gradient supported
by LLJ. Transition of LLJ underway placing favorable region of
forcing further east and CAMs starting to better reflect current
timing. Expect most of this activity to shift east of our CWA with
the next few hours and main instability  axis eventually shift
south as cold front moves over our CWA.

Today-Tonight: this front may stall just south of our CWA and
there may be enough lingering forcing/instability to support
redevelopment. Better signal/parameters are further south, so
while a strong/marginally severe storm can't be ruled out later
this afternoon/evening confidence is not high. Despite cold
frontal passage air mass will still support above normal temps and
ironically due to clearing we will actually be warmer than
yesterday (when convection busted our potentially hot day).

.LONG TERM...(Monday through Saturday)
Issued at 344 AM CDT Sun Jun 30 2019

Series of large mid-upper lows track north of International Border
keep lower heights in place through the later periods and
shortwave troughs/reinforcing cold fronts should bring temps back
to seasonal normals in upper 70s/lower 80s (maybe below normal a
few days). This pattern will remain unsettled, with low confidence
in coverage/impacts due to the variable nature of shortwaves and
depiction of details run-run between models. It's hard to have
confidence in thunderstorm coverage, much less severe potential.
Monday night-Tuesday morning now shown with stronger forcing
potential with fropa, but a little less instability/shear than
depicted with this shortwave trough passage yesterday when Tuesday-
Tuesday night looked a little better for severe. Current guidance
does show better instability/shear now on Thursday (July 4), but
that's a new trend and things could change.

&&

.AVIATION...(For the 12Z TAFS through 12Z Monday morning)
Issued at 720 AM CDT Sun Jun 30 2019

There has been pockets of fog and stratus briefly reducing flight
conditions in northwest MN impacting KTVF and BJI, but with
daytime beating getting underway this should burn off with VFR
prevailing by 14Z. Showers/thunderstorms beginning to develop
again in west central MN and additional shower/storm chances will
continue south of Highway 10 through the afternoon/early evening.
Low confidence in impacts at terminals, so mention was left out
of TAFs. Winds will remain light generally from the northwest 10
mph or less.

&&

.FGF WATCHES/WARNINGS/ADVISORIES...
ND...None.
MN...None.
&&

UPDATE...DJR
SHORT TERM...DJR
LONG TERM...DJR
AVIATION...DJR

Hazardous weather outlook, Jun 30, 5:06 AM CDT, 2 hours 24 minutes before

Hazardous Weather Outlook
National Weather Service Grand Forks ND
506 AM CDT Sun Jun 30 2019

MNZ001>009-013>017-022>024-027-028-NDZ006>008-014>016-024-026>030-
038-039-054-011015-
West Polk-Norman-Clay-Kittson-Roseau-Lake Of The Woods-
West Marshall-East Marshall-North Beltrami-Pennington-Red Lake-
East Polk-North Clearwater-South Beltrami-Mahnomen-
South Clearwater-Hubbard-West Becker-East Becker-Towner-Cavalier-
Pembina-Benson-Ramsey-Eastern Walsh County-Eddy-Nelson-
Grand Forks-Griggs-Steele-Traill-Barnes-Cass-Western Walsh County-
506 AM CDT Sun Jun 30 2019

This hazardous weather outlook is for portions of eastern North
Dakota, west central and northwest Minnesota.

.DAY ONE...Today and Tonight

A few thunderstorms can't be ruled out across eastern North Dakota
and northwest Minnesota this afternoon and evening. No hazardous
weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

There will be thunderstorm chances on and off throughout much of
the next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

MNZ029>032-040-NDZ049-052-053-011015-
Wilkin-West Otter Tail-East Otter Tail-Wadena-Grant-Ransom-
Sargent-Richland-
506 AM CDT Sun Jun 30 2019

This hazardous weather outlook is for portions of eastern North
Dakota and west central Minnesota.

.DAY ONE...Today and Tonight

Scattered thunderstorms may redevelop this afternoon and evening
south of Highway 10 in far southeast North Dakota and west central
Minnesota. A severe storm can't be ruled out, with hail to 1 inch
and winds to 60 mph.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

There will be thunderstorm chances on and off throughout much of
the next week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Jun 30, 1:54 AM CDT, 5 hours 36 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
154 AM CDT Sun Jun 30 2019

MNZ009-017-300745-
North Beltrami MN-South Beltrami MN-
154 AM CDT Sun Jun 30 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN BELTRAMI COUNTY
UNTIL 245 AM CDT...

At 154 AM CDT, Doppler radar was tracking a strong thunderstorm over
Puposky, or 13 miles north of Bemidji, moving east at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Bemidji, Blackduck, Tenstrike, Lavinia, Turtle River, Hines and
Nebish.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.

&&

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
north central Minnesota.

LAT...LON 4741 9470 4755 9508 4772 9509 4792 9480
      4787 9442 4741 9442
TIME...MOT...LOC 0654Z 290DEG 27KT 4767 9486

Lynch

Special weather statement, Jun 30, 3:07 AM CDT, 4 hours 23 minutes before

Special Weather Statement
National Weather Service Grand Forks ND
307 AM CDT Sun Jun 30 2019

MNZ015>017-023-024-300915-
South Clearwater MN-Hubbard MN-East Polk MN-North Clearwater MN-
South Beltrami MN-
307 AM CDT Sun Jun 30 2019

...SIGNIFICANT WEATHER ADVISORY FOR HUBBARD...EASTERN POLK...
SOUTHEASTERN BELTRAMI AND CLEARWATER COUNTIES UNTIL 415 AM CDT...

At 307 AM CDT, Doppler radar was tracking a strong thunderstorm near
Wilton, or 7 miles west of Bemidji, moving southeast at 35 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Bemidji, Bagley, Blackduck, Plantagenet Lake, Clearbrook, Akeley and
Lake George.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
office in Grand Forks.

&&

A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
north central and northwestern Minnesota.

LAT...LON 4741 9467 4693 9466 4723 9539 4746 9555
      4750 9555 4750 9558 4761 9566 4784 9533
      4785 9442 4741 9442
TIME...MOT...LOC 0807Z 300DEG 30KT 4744 9503

Lynch

Local storm report, Jun 30, 3:12 AM CDT, 4 hours 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
312 AM CDT SUN JUN 30 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0241 AM     HAIL             2 NE LAVINIA            47.54N 94.78W
06/30/2019  E0.75 INCH       Beltrami           MN   PUBLIC

&&

BP

Local storm report, Jun 30, 3:17 AM CDT, 4 hours 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
317 AM CDT SUN JUN 30 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0259 AM     HAIL             2 SE ROSBY              47.40N 94.78W
06/30/2019  E0.75 INCH       Hubbard            MN   LAW ENFORCEMENT

            PEA TO DIME SIZE HAIL AND GUSTY SUB SEVERE WINDS

&&

BP

Local storm report, Jun 30, 5:02 AM CDT, 2 hours 28 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GRAND FORKS ND
502 AM CDT SUN JUN 30 2019

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0259 AM     HAIL             2 SE ROSBY              47.40N 94.78W
06/30/2019  E0.75 INCH       HUBBARD            MN   LAW ENFORCEMENT

            PEA TO DIME SIZE HAIL AND GUSTY SUB SEVERE
            WINDS.

0241 AM     HAIL             2 NE LAVINIA            47.54N 94.78W
06/30/2019  E0.75 INCH       BELTRAMI           MN   PUBLIC

&&

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 29, 9:27 PM CDT	Special Weather Statement	FGF	Kittson, Marshall	63 min
Jun 29, 10:28 PM CDT	Severe Thunderstorm Warning	FGF	Kittson, Marshall	32 min
Jun 29, 10:38 PM CDT	Special Weather Statement	FGF	Roseau	22 min
Jun 29, 10:39 PM CDT	Special Weather Statement	FGF	Roseau	36 min
Jun 29, 10:55 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Marshall, Roseau	50 min
Jun 29, 11:20 PM CDT	Special Weather Statement	FGF	Pennington	40 min
Jun 29, 11:31 PM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Lake of the Woods, Marshall, Pennington, Polk and 1 more	59 min
Jun 30, 12:24 AM CDT	Special Weather Statement	FGF	Beltrami	36 min
Jun 30, 12:27 AM CDT	Special Weather Statement	FGF	Beltrami	33 min
Jun 30, 12:41 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	34 min
Jun 30, 1:00 AM CDT	Special Weather Statement	FGF	Beltrami	60 min
Jun 30, 1:15 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami	45 min
Jun 30, 1:44 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater, Pennington, Polk, Red Lake	46 min
Jun 30, 1:54 AM CDT	Special Weather Statement	FGF	Beltrami	51 min
Jun 30, 2:04 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Hubbard	41 min
Jun 30, 2:25 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Clearwater	50 min
Jun 30, 2:41 AM CDT	Severe Thunderstorm Warning	FGF	Beltrami, Hubbard	64 min
Jun 30, 3:07 AM CDT	Special Weather Statement	FGF	Clearwater, Hubbard	68 min
Jun 30, 7:53 AM CDT	Special Weather Statement	FGF	Wadena	37 min
Jun 30, 7:58 AM CDT	Severe Thunderstorm Warning	FGF	Otter Tail, Wadena	37 min
Jun 30, 8:19 AM CDT	Special Weather Statement	FGF	Wadena	56 min
Jun 30, 8:53 AM CDT	Special Weather Statement	FGF	Grant	22 min
Jun 30, 8:58 AM CDT	Severe Thunderstorm Warning	FGF	Grant	32 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2019 Every severe thunderstorm warning in 2019

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.