Special Weather Statement, NWS Glasgow, MT

Area Forecast Discussion
National Weather Service Glasgow MT
214 PM MDT Thu Aug 26 2021

.DISCUSSION...
A couple periods of showers and thunderstorms are expected to move
through the area this evening then again late tomorrow (Friday).

An upper trough approaching the area will be sending a couple
upper disturbances through. Timing and lack of low level support
may keep storms from getting too hairy today with the best chance
over the SW zones through about 8 pm. The showers and diminishing
thunderstorms will work their way east this evening but not
exiting the Plentywood area till Friday morning.

The next area of developing thunderstorms look to have more
muscle. The timing looks better as they develop earlier tomorrow
with some likely to be severe especially over the SE zones
during the afternoon.

Otherwise, much of the CWA should pick up at least a quarter of an
inch of rainfall from both systems with areas in the NE zones
picking up close to an inch.

The upper trough will lift to the northeast Saturday but NW winds
may be strong enough on the backside for a Lake Wind Advisory.

Dry and warm conditions are expected Sunday-Monday before the
next trough moves in for the next chance of showers. TFJ

&&

.AVIATION...
LAST UPDATE: 2000Z

FLIGHT CAT: VFR then MVFR conds tonight.

Showers and thunderstorms will move east this evening into the TAF
sites. MVFR conds can be expected in the heavier storms at KGGW
and KOLF with lowering ceilings expected at KSDY and KGDV tonight
that briefly may reach IFR conditions.

Skies gradually clear Friday morning with another round of
showers/storms in the afternoon from the west.

WINDS: E or SE 10-15 kts at KGGW with lighter speeds elsewhere.
TFJ

&&

.GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE.

&&

weather.gov/glasgow

Special Weather Statement
National Weather Service Glasgow MT
445 PM MDT Thu Aug 26 2021

MTZ021-262330-
Petroleum MT-
445 PM MDT Thu Aug 26 2021

...A strong thunderstorm will impact portions of southwestern
Petroleum County through 530 PM MDT...

At 444 PM MDT, Doppler radar was tracking a strong thunderstorm near
Winnett, moving northeast at 15 mph.

HAZARD...Wind gusts up to 50 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Winnett and Tiegen.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4723 10833 4700 10812 4689 10849 4701 10861
      4706 10861
TIME...MOT...LOC 2244Z 237DEG 13KT 4701 10848

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH

NWS Glasgow

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
526 PM MDT THU AUG 26 2021

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

0510 PM     HAIL             6 ESE TIEGEN            47.02N 108.48W
08/26/2021  E1.25 INCH       PETROLEUM          MT   PUBLIC

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
540 PM MDT THU AUG 26 2021

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

0535 PM     HAIL             WINNETT                 47.00N 108.35W
08/26/2021  E0.88 INCH       PETROLEUM          MT   LAW ENFORCEMENT

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
617 PM MDT THU AUG 26 2021

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

0550 PM     HAIL             2 E WINNETT             47.00N 108.31W
08/26/2021  M1.00 INCH       PETROLEUM          MT   LAW ENFORCEMENT

            NICKEL TO QUARTER SIZED HAIL ON MT-200 2
            MILES EAST OF WINNETT.

0555 PM     FLOOD            2 E WINNETT             47.00N 108.31W
08/26/2021                   PETROLEUM          MT   LAW ENFORCEMENT

            SOME WATER COMING OUT OF A COULEE 2 MILES
            EAST OF WINNETT.

&&

Special Weather Statement
National Weather Service Glasgow MT
621 PM MDT Thu Aug 26 2021

MTZ021-270100-
Petroleum MT-
621 PM MDT Thu Aug 26 2021

...A strong thunderstorm will impact portions of southwestern
Petroleum County through 700 PM MDT...

At 621 PM MDT, Doppler radar was tracking a strong thunderstorm 7
miles west of Flatwillow, or 13 miles southwest of Winnett, moving
east at 25 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Winnett, Flatwillow and Petrolia Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4684 10863 4684 10861 4696 10861 4713 10822
      4677 10813 4675 10863
TIME...MOT...LOC 0021Z 256DEG 20KT 4686 10856

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

RMB/GAH