Red Flag Warning 4, NWS Glasgow, MT

794 
WWUS85 KGGW 010855
RFWGGW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Glasgow MT
255 AM MDT Thu Apr 1 2021

...CRITICAL FIRE WEATHER CONDITIONS TODAY...

.Low relative humidity and gusty winds today will be followed by 
slightly higher relative humidity and lighter winds on Friday.

MTZ134>137-012100-
/O.CAN.KGGW.FW.A.0004.210402T1800Z-210403T0300Z/
/O.CON.KGGW.FW.W.0004.210401T1800Z-210402T0300Z/
Northern Valley and Northern Phillips Counties-The Little Rockies-
The Lower Missouri River Breaks including the Charles M Russell
National Wildlife Refuge-
Southern Petroleum and Southern Garfield Counties-
255 AM MDT Thu Apr 1 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR LOW RELATIVE HUMIDITY AND GUSTY WINDS FOR FIRE 
WEATHER ZONES 134, 135, 136, AND 137... 
...FIRE WEATHER WATCH IS CANCELLED FOR FRIDAY FOR FIRE WEATHER 
ZONES 134, 135, 136, AND 137...

The National Weather Service in Glasgow has cancelled the Fire
Weather Watch for Friday.

* AFFECTED AREA...Fire Weather Zones 134, 135, 136 and 137.

* TIMING...Noon to 9 PM Today.

* WINDS...West 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* TEMPERATURES...In the lower 70s.

* IMPACTS...Any fires that start will spread rapidly to the 
  northeast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please advise the appropriate officials or fire crews in these
areas of this Red Flag Warning.

&&

$$

MTZ120-122-012100-
/O.CON.KGGW.FW.W.0004.210401T1800Z-210402T0300Z/
Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties-
Dawson/McCone/Prairie/Richland/Wibaux Counties-
255 AM MDT Thu Apr 1 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR LOW RELATIVE HUMIDITY AND GUSTY WINDS FOR FIRE 
WEATHER ZONES 120 AND 122...

* AFFECTED AREA...Fire Weather Zones 120 and 122.

* TIMING...Noon to 9 PM Today.

* WINDS...Southwest 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 12 percent.

* TEMPERATURES...In the upper 60s and lower 70s.

* IMPACTS...Any fires that start will spread rapidly to the 
  northeast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please advise the appropriate officials or fire crews in these
areas of this Red Flag Warning.

&&

$$

http://www.weather.gov/glasgow

047 
WWUS85 KGGW 011926
RFWGGW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Glasgow MT
126 PM MDT Thu Apr 1 2021

...CRITICAL FIRE WEATHER CONDITIONS TODAY...

.Low relative humidity and gusty winds today will be followed by
slightly higher relative humidity and lighter winds on Friday.

MTZ120-122-134>137-020300-
/O.CON.KGGW.FW.W.0004.000000T0000Z-210402T0300Z/
Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties-
Dawson/McCone/Prairie/Richland/Wibaux Counties-
Northern Valley and Northern Phillips Counties-The Little Rockies-
The Lower Missouri River Breaks including the Charles M Russell
National Wildlife Refuge-
Southern Petroleum and Southern Garfield Counties-
126 PM MDT Thu Apr 1 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR LOW RELATIVE HUMIDITY AND GUSTY WINDS FOR FIRE WEATHER ZONES 
120, 122, 134, 135, 136, AND 137...

* AFFECTED AREA...Fire Weather Zones 120, 122, 134, 135, 136 and 
  137.

* TIMING...Noon to 9 PM Today.

* WINDS...Southwest 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 12 percent.

* TEMPERATURES...In the lower 60s.

* IMPACTS...Any fires that start will spread rapidly to the 
  northeast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please advise the appropriate officials or fire crews in these
areas of this Red Flag Warning.

&&

$$

http://www.weather.gov/glasgow

201 
WWUS85 KGGW 020259
RFWGGW

URGENT - FIRE WEATHER MESSAGE
National Weather Service Glasgow MT
859 PM MDT Thu Apr 1 2021


MTZ120-122-134>137-020400-
/O.CAN.KGGW.FW.W.0004.000000T0000Z-210402T0300Z/
Fort Peck Reservation and Daniels/Roosevelt/Sheridan Counties-
Dawson/McCone/Prairie/Richland/Wibaux Counties-
Northern Valley and Northern Phillips Counties-The Little Rockies-
The Lower Missouri River Breaks including the Charles M Russell
National Wildlife Refuge-
Southern Petroleum and Southern Garfield Counties-
859 PM MDT Thu Apr 1 2021

...RED FLAG WARNING IS CANCELLED FOR LOW RELATIVE HUMIDITY AND
GUSTY WINDS FOR FIRE WEATHER ZONES 120, 122, 134, 135, 136, AND 
137...

The National Weather Service in Glasgow has cancelled the Red
Flag Warning. Relative humidity is recovering gradually and winds
have decreased.

$$

http://www.weather.gov/glasgow

Area Forecast Discussion
National Weather Service Glasgow MT
243 PM MDT Wed Mar 31 2021

.DISCUSSION...

Afternoon Update: There was enough confidence added this afternoon
with adjustments to winds and RH for tomorrow that fire weather
will be critical in the afternoon, thus necessitating an upgrade
to a Red Flag Warning. For Friday, while conditions are not quite
as much of a slam dunk as Thursday, so to speak, with criticality
for fire weather concerns, the western half of the region looks
more likely to reach thresholds for an RFW, so a new Fire Weather
Watch for the western half of the area was issued for Friday
afternoon. Otherwise, the rest of the forecast was left alone with
a fairly quiet pattern expected.

Cliff

PREVIOUS DISCUSSION:
Following a cold morning across NE Montana, at least when
compared to recent days, temperatures will be on the upswing as
upper ridging becomes established over the next several days.

While upper ridging will guide dry weather and warmer temperatures
across the region, with highs into the 60s and 70s by Thursday and
beyond, this pattern will begin to raise other forecast
challenges. Breezy conditions combined with low relative humidity
and dry fuels will lead to high fire weather danger on Thursday.
As such, have continued the Fire Weather Watch. This threat may
linger into Friday, though there is somewhat greater uncertainty
on wind speeds at this time.

For the weekend, warm and dry weather will also remain in place,
though a cold front may approach before the weekend is through
with cooler temperatures for early next week.

&&

.AVIATION...

LLWS: Some shear potential exists at OLF overnight from 09Z-12Z,
out of the west at 30kts.

Expected Flight Category: VFR

Synopsis: Pleasant flying conditions expected most of the period,
with mostly clear to partly cloudy skies through Thursday.

Winds: Light winds under 10 kts for much of the area will become
west-southwest Thursday at 10-20 kts.

Cliff

&&

.FIRE WEATHER...

For Thursday, critical fire weather concerns are expected with
southwest winds likely to be 15-20 mph most of the afternoon, and
relative humidity bottoming out in the teens across the region.
Winds most of the afternoon are likely to be higher than the RH,
thus necessitating an upgrade to RFW region-wide for Thursday.

On Friday, winds are expected to be lighter than Thursday overall,
but moreso in the east than in the west. With lower winds, even
though RH is likely going to be comparable to Thursday, conditions
are not expected to be critical for the eastern half of the
region. In the western half, however, there does seem to be some
indication that winds could exceed RH, thus it was deemed
necessary to put out a Fire Weather Watch for Fire Weather zones
134-137 Friday afternoon.

Cliff

&&

.GLASGOW WATCHES/WARNINGS/ADVISORIES...
Red Flag Warning from noon to 9 PM MDT Thursday for
MTZ120-122-134>137.

Fire Weather Watch from Friday afternoon through Friday evening
for MTZ134>137.

&&

weather.gov/glasgow