Special Weather Statement, NWS Grand Forks, ND

Area Forecast Discussion
National Weather Service Grand Forks ND
334 PM CDT Fri Jun 4 2021

.SHORT TERM...(This evening through Saturday night)
Issued at 334 PM CDT Fri Jun 4 2021

Heat extremes and convection chances will be the main forecast
concerns.

Lot of triple digits across the Red river Valley with mid to upper
90s where it hasn't reached the century mark yet. Cold front is
approaching the international border, with winds switching
northwest and a bit of a cool down into the lower 90s and 80s.
Winds gusting above 30 mph in many of our eastern ND sites and
even a few of the MN sites. Dew points remain in the upper 40s and
50s, and fire weather remains critical (see below discussion).
CAMs and most of the global models show a decent amount of
instability pooling along the front as it pushes into northern ND.
A bit of cumulus starting to develop near the front in the
northern Red River Valley, and there is some shower activity over
eastern MT as the ridge riding shortwave pushes into our area.
CAMs continue to break out some convection with strong UH values
between 00Z and 04Z this evening. The boundary layer is well
mixed, with low level moisture a bit lacking, so anything that
develops will be very high based. Can't rule out some damaging
wind gusts from any convection that we get, but the HRRR at least
seems to be overdoing current convection along the front, so think
it may be a bit less coverage than CAMs indicate. Will continue to
keep POPs in as the front slowly pushes south overnight.

West to southwesterly flow aloft will continue into tomorrow, with
the front washing out and southerly winds returning to the area.
Another hot day, although perhaps not has hot as today. Some
models break out some additional QPF during the day on Saturday
but with no surface boundary or upper support am not too excited
and think better chances will be Saturday night. Another ridge
riding shortwave will move out into the region after 06Z Sunday,
pushing the surface trough and front back into our area. There
should be a decent amount of showers and thunderstorms along this
boundary, and with MU CAPE values over 2000 J/kg and 40 kts deep
layer bulk shear near the Canadian border, some scattered severe
potential can't be ruled out.

.LONG TERM...(Sunday through Friday)

Issued at 334 PM CDT Fri Jun 4 2021

Main challenge in the extended period relates to upper level energy
rotating around a strong thermal ridge in place over the middle of
the country.

For Sunday...a strong upper level ridge is in place over the area to
start the period. Vigorous jet with associated shortwave will
distort the upper ridge allowing for a slight cooling of the
temperatures. The frontal boundary and energy aloft will combine to
trigger some thunderstorm activity across the area early in the day
on Sunday. By Monday...the upper wave lifts northeast toward Hudson
Bay allowing the upper ridge rebound...although temperatures will
remain a little cooler to start the work week.

Monday night though Friday...a series of waves rotate around the
periphery of the ridge bringing chances again for some scattered
showers. The pattern finally shifts for the end of the period with a
front crossing the area early Friday...bringing cooler and more
seasonable temperatures. Better chances for showers and storms can
be expected with the system to end the period.

&&

.AVIATION...(For the 18Z TAFS through 18Z Saturday afternoon)
Issued at 1241 PM CDT Fri Jun 4 2021

VFR conditions now and throughout the period. Some thunderstorm
activity will be possible between 00Z and 04Z at the more northern
TAF sites. However, coverage is somewhat uncertain so will leave
out of the TAFs for now. Any ceilings even with TS activity would
be over 7000 ft. Winds continue to gust above 20 kts from the
southwest at most locations, but all the airports except KFAR will
see a wind shift to a more northwest and then northerly direction
this evening as a cold front sags into the area. Winds will
decrease in speed overnight, shifting back around to the south.

&&

.FIRE WEATHER...
Issued at 334 PM CDT Fri Jun 4 2021

Super hot with triple digits to 90s, and dew points in the upper
40s to 50s, gives us RH values below 20 percent in many areas.
Winds have been gusting to 30 mph or even above in many locations,
putting most of the region into Red Flag criteria. The exception
has been in Grant county, where the winds have been lighter so
will let the watch go. Winds will diminish this evening, with
portions of northeastern ND and northwestern MN shifting to a more
northerly direction as a front sags down from Canada. Some
convection will be possible along this front, but any wetting
rain will be very spotty.

Another very hot day tomorrow, with RH values again down into the
25 to 35 percent range. The front will wash out and winds will
return to the south, with some 15 to 20 mph speeds across eastern
ND. Near critical fire weather conditions will be possible.
Another critical to near critical day is possible across eastern
ND on Sunday, with westerly winds picking up into the 15 to 25
mph range and RH values again around 20 percent.

&&

.FGF WATCHES/WARNINGS/ADVISORIES...
ND...Red Flag Warning until 9 PM CDT this evening for NDZ006>008-
     014>016-024-026>030-038-039-049-052>054.

MN...Red Flag Warning until 9 PM CDT this evening for MNZ001>009-
     013>017-022>024-027>032.

     Fire Weather Watch until 9 PM CDT this evening for MNZ040.

SHORT TERM...JR
LONG TERM...Hopkins
AVIATION...JR
FIRE WEATHER...JR

Hazardous Weather Outlook
National Weather Service Grand Forks ND
622 AM CDT Fri Jun 4 2021

MNZ001-004>009-013>016-NDZ006>008-014>016-024-026>030-054-051130-
West Polk-Kittson-Roseau-Lake Of The Woods-West Marshall-
East Marshall-North Beltrami-Pennington-Red Lake-East Polk-
North Clearwater-Towner-Cavalier-Pembina-Benson-Ramsey-
Eastern Walsh-Eddy-Nelson-Grand Forks-Griggs-Steele-Traill-
Western Walsh-
622 AM CDT Fri Jun 4 2021

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

.DAY ONE...Today and Tonight

Critical fire weather conditions this afternoon and evening exist
due to gusty winds and low relative humidity. This evening will
see the chance for a few thunderstorms, with the risk of severe
storms. Threat is damaging wind gusts.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Chance for thunderstorms exist Saturday overnight, mainly in the
Devils Lake North Dakota area north. Risk of damaging wind gusts
and large hail.

On Sunday a chance for strong thunderstorms exist in areas from
Baudette to Bemidji to Fergus Falls Minnesota.

For Monday through Thursday, there are slight chances for
thunderstorms but the probability for widespread hazardous
weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

MNZ002-003-017-022>024-027>032-040-NDZ038-039-049-052-053-051130-
Norman-Clay-South Beltrami-Mahnomen-South Clearwater-Hubbard-
West Becker-East Becker-Wilkin-West Otter Tail-East Otter Tail-
Wadena-Grant-Barnes-Cass-Ransom-Sargent-Richland-
622 AM CDT Fri Jun 4 2021

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

.DAY ONE...Today and Tonight

Critical or near critical fire weather conditions will exist this
afternoon and early evening due to gusty winds and low relative
humidity.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Near critical fire weather conditions are possible Saturday.
Sunday will see a chance for strong thunderstorms, mainly in west
central Minnesota.

For Monday through Thursday, there are slight chances for
thunderstorms but the probability for widespread hazardous
weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

DTR

Special Weather Statement
National Weather Service Grand Forks ND
523 PM CDT Fri Jun 4 2021

MNZ005-008-009-042315-
East Marshall MN-North Beltrami MN-Roseau MN-
523 PM CDT Fri Jun 4 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MARSHALL...
SOUTHWESTERN ROSEAU AND NORTHWESTERN BELTRAMI COUNTIES UNTIL 615 PM
CDT...

At 523 PM CDT, Doppler radar was tracking a strong thunderstorm near
Strathcona, or 28 miles north of Thief River Falls, moving east at 40
mph.

Wind gusts of 50 to 55 mph will be possible with this storm.

This strong thunderstorm will be near...
  Strathcona around 525 PM CDT.
  Middle River around 530 PM CDT.
  Gatzke around 555 PM CDT.
  Grygla around 615 PM CDT.

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.

&&

LAT...LON 4845 9639 4862 9631 4852 9545 4821 9557
TIME...MOT...LOC 2223Z 287DEG 33KT 4852 9624

Knutsvig

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS ND
527 PM CDT FRI JUN 4 2021

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

0510 PM     TSTM WND GST     4 SSE MATTSON           48.64N 97.04W
06/04/2021  M50 MPH          KITTSON            MN   MESONET

            MESONET STATION 214249 KENNEDY MN 6 W
            (NDAWN).

&&

AP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS ND
528 PM CDT FRI JUN 4 2021

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

0510 PM     TSTM WND GST     2 N MADDOCK             47.99N 99.53W
06/04/2021  M53 MPH          BENSON             ND   MESONET

            MESONET STATION 325435 MADDOCK ND 2 N
            (NDAWN).

&&

AP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS ND
529 PM CDT FRI JUN 4 2021

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

0506 PM     TSTM WND GST     2 NE KARLSTAD           48.59N 96.49W
06/04/2021  M49 MPH          KITTSON            MN   MESONET

            MESONET STATION KITM5 KARLSTAD MN.

&&

AP

Special Weather Statement
National Weather Service Grand Forks ND
533 PM CDT Fri Jun 4 2021

NDZ007-008-016-054-042315-
Pembina ND-Eastern Walsh County ND-Western Walsh County ND-
Cavalier ND-
533 PM CDT Fri Jun 4 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CAVALIER...CENTRAL
WALSH AND SOUTHWESTERN PEMBINA COUNTIES UNTIL 615 PM CDT...

At 533 PM CDT, Doppler radar was tracking a strong thunderstorm near
Milton, or 18 miles southeast of Langdon, moving southeast at 35 mph.

Penny size hail and wind gusts of 50 to 55 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Union and Gardar around 545 PM CDT.
  Edinburg around 555 PM CDT.
  Park River around 605 PM CDT.
  Mandt, Veseleyville and Pisek around 615 PM CDT.

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.

&&

LAT...LON 4853 9825 4868 9812 4846 9742 4820 9768
TIME...MOT...LOC 2233Z 299DEG 31KT 4857 9809

Knutsvig

Special Weather Statement
National Weather Service Grand Forks ND
611 PM CDT Fri Jun 4 2021

NDZ026-028-042345-
Griggs ND-Nelson ND-
611 PM CDT Fri Jun 4 2021

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN NELSON AND NORTHEASTERN
GRIGGS COUNTIES UNTIL 645 PM CDT...

At 611 PM CDT, Doppler radar was tracking a strong thunderstorm over
Pekin, or 31 miles southeast of Devils Lake, moving east at 25 mph.

Wind gusts up to 50 mph will be possible with this storm.

This strong thunderstorm will be near...
  Pekin around 615 PM CDT.
  McVille around 635 PM CDT.
  Kloten and Aneta around 645 PM CDT.

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.

&&

LAT...LON 4790 9845 4789 9789 4767 9794 4767 9799
      4760 9798 4766 9849
TIME...MOT...LOC 2311Z 279DEG 20KT 4780 9836

Knutsvig