Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Grand Rapids, MI

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000
FNUS53 KGRR 171941
FWFGRR

Fire Weather Planning Forecast for Southwest Lower Michigan
National Weather Service Grand Rapids MI
341 PM EDT Sat Apr 17 2021

...Dry again Sunday, chance of rain Monday then some snow...

.DISCUSSION...
Conditions Sunday similar to Saturday (after another cold night),
then a cold front brings a chance of light rain Monday. Much
colder air behind that front and a wave of low pressure moving
along the front will bring a threat of accumulating snow Tuesday
night. Highs Tuesday and Wednesday will be only around 40, with
sub-freezing nighttime lows expected both Tuesday and Wednesday
nights.


MIZ037>039-043>045-180815-
Mason-Lake-Osceola-Oceana-Newaygo-Mecosta-
Including the cities of Ludington, Baldwin, Reed City, Hart,
Fremont, and Big Rapids
341 PM EDT Sat Apr 17 2021

.TONIGHT...
Sky/weather.........Mostly clear (15-25 percent). Areas of frost
                    after 2400 until 0300, then widespread frost.
Min temperature.....26-31.
   24 hr trend......1 degree cooler.
Max humidity........87-92 percent.
   24 hr trend......Unchanged.
20-foot winds.......North winds around 5 mph in the evening
                    becoming light.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......Near Lake Michigan, 0-500 ft AGL.
Mixing height....... inland, 1700-2200 ft AGL decreasing to 0-200
                    ft AGL overnight.
Transport winds.....North around 5 mph.
Smoke dispersal.....0-300 (poor to good).
Pcpn Amount.........None.

.SUNDAY...
Sky/weather.........Sunny (20-30 percent). Widespread frost until
                    0900, then areas of frost until 1000.
Max temperature.....54-59.
   24 hr trend......Unchanged.
Min humidity........35-40 percent near Lake Michigan and 26-31
                    percent Inland.
   24 hr trend......1 percent wetter near Lake Michigan and 14
                    percent drier Inland.
20-foot winds.......Light winds becoming west around 7 mph in the
                    afternoon.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......Near Lake Michigan, 3600-4100 ft AGL.
Mixing height....... inland, 5100-5600 ft AGL increasing to
                    8600-9100 ft AGL in the afternoon.
Transport winds.....West 5 to 10 mph.
Smoke dispersal.....700-1000 (excellent).
Pcpn Amount.........None.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy (30-40 percent). Areas of frost
                    after 0100.
Min temperature.....33-38.
   24 hr trend......10 degrees warmer.
Max humidity........91-96 percent.
   24 hr trend......Unchanged.
20-foot winds.......Light winds becoming southwest around 6 mph
                    overnight.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......Near Lake Michigan, 0-200 ft AGL.
Mixing height....... inland, 1900-2400 ft AGL decreasing to 0-200
                    ft AGL overnight.
Transport winds.....Southwest around 5 mph.
Smoke dispersal.....0-200 (poor to fair).
Pcpn Amount.........None.

.MONDAY...
Sky/weather.........Mostly cloudy (75-85 percent). Chance of rain
                    showers.
Chance of pcpn......30 percent.
Max temperature.....48-53.
   24 hr trend......9 degrees cooler.
Min humidity........53-58 percent near Lake Michigan and 45-50
                    percent Inland.
   24 hr trend......19 percent wetter near Lake Michigan and 24
                    percent wetter Inland.
20-foot winds.......West winds 8 to 13 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......3200-3700 ft AGL.
Transport winds.....West around 15 mph.
Smoke dispersal.....500-600 (good to excellent).
Pcpn Amount.........none to 0.07 in.


$$

MIZ040-046-180815-
Clare-Isabella-
Including the cities of Clare and Mount Pleasant
341 PM EDT Sat Apr 17 2021

.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent). Areas of frost
                    after 2400 until 0300, then widespread frost.
Min temperature.....27-32.
   24 hr trend......Unchanged.
Max humidity........87-92 percent.
   24 hr trend......Unchanged.
20-foot winds.......North winds around 5 mph in the evening
                    becoming light.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......3800-4300 ft AGL decreasing to 0-300 ft AGL
                    overnight.
Transport winds.....Northwest 5 to 10 mph.
Smoke dispersal.....0-300 (poor to good).
Pcpn Amount.........None.

.SUNDAY...
Sky/weather.........Mostly sunny (30-40 percent). Widespread frost
                    until 0900.
Max temperature.....Around 59.
   24 hr trend......1 degree warmer.
Min humidity........24-29 percent.
   24 hr trend......16 percent drier.
20-foot winds.......Northwest winds 5 to 9 mph.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......5800-6300 ft AGL increasing to 8800-9300 ft AGL
                    in the afternoon.
Transport winds.....Northwest around 10 mph.
Smoke dispersal.....900-1300 (excellent).
Pcpn Amount.........None.

.SUNDAY NIGHT...
Sky/weather.........Partly cloudy (25-35 percent). Areas of frost
                    after 0200.
Min temperature.....Around 35.
   24 hr trend......3 degrees warmer.
Max humidity........80-85 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southwest winds 5 to 6 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......2100-2600 ft AGL decreasing to 0-100 ft AGL
                    overnight.
Transport winds.....Southwest around 5 mph.
Smoke dispersal.....0-200 (poor to fair).
Pcpn Amount.........None.

.MONDAY...
Sky/weather.........Mostly cloudy (65-75 percent).
Max temperature.....50-55.
   24 hr trend......5 degrees cooler.
Min humidity........42-47 percent.
   24 hr trend......19 percent wetter.
20-foot winds.......West winds 10 to 15 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......3600-4100 ft AGL.
Transport winds.....West around 20 mph.
Smoke dispersal.....700-800 (excellent).
Pcpn Amount.........none to 0.01 in.


$$

MIZ050-056-064-071-180815-
Muskegon-Ottawa-Allegan-Van Buren-
Including the cities of Muskegon, Grand Haven, Jenison, Holland,
and South Haven
341 PM EDT Sat Apr 17 2021

.TONIGHT...
Sky/weather.........Mostly clear (15-25 percent). Areas of frost
                    after 2400 until 0500, then widespread frost.
Min temperature.....31-36.
   24 hr trend......1 degree warmer.
Max humidity........91-96 percent.
   24 hr trend......Unchanged.
20-foot winds.......Northwest winds 5 to 6 mph.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.
Mixing height.......800-1300 ft AGL.
Transport winds.....Northwest around 5 mph.
Smoke dispersal.....0-100 (poor).
Pcpn Amount.........None.

.SUNDAY...
Sky/weather.........Mostly sunny (20-30 percent). Areas of frost
                    until 0900.
Max temperature.....55-60.
   24 hr trend......Unchanged.
Min humidity........28-33 percent.
   24 hr trend......10 percent drier.
20-foot winds.......Light winds becoming west around 8 mph in the
                    afternoon.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......Near Lake Michigan, 5400-5900 ft AGL.
Mixing height....... inland, 7000-7500 ft AGL increasing to
                    9700-10200 ft AGL in the afternoon.
Transport winds.....West 5 to 10 mph.
Smoke dispersal.....700 (excellent) increasing to 1600 (excellent)
                    in the afternoon.
Pcpn Amount.........None.

.SUNDAY NIGHT...
Sky/weather.........Mostly clear (15-25 percent).
Min temperature.....Around 40.
   24 hr trend......5 degrees warmer.
Max humidity........87-92 percent.
   24 hr trend......Unchanged.
20-foot winds.......Light winds becoming southwest around 7 mph
                    overnight.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......400-900 ft AGL.
Transport winds.....Southwest around 5 mph.
Smoke dispersal.....0 (poor).
Pcpn Amount.........None.

.MONDAY...
Sky/weather.........Partly sunny (60-70 percent).
Max temperature.....54-59.
   24 hr trend......2 degrees cooler.
Min humidity........50-55 percent near Lake Michigan and 42-47
                    percent Inland.
   24 hr trend......18 percent wetter near Lake Michigan and 23
                    percent wetter Inland.
20-foot winds.......West winds 9 to 14 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......2600-3100 ft AGL near Lake Michigan and
                    6200-6700 ft AGL inland.
Transport winds.....West 15 to 20 mph.
Smoke dispersal.....1600-1900 (excellent).
Pcpn Amount.........none to 0.03 in.


$$

MIZ051-052-057>059-180815-
Montcalm-Gratiot-Kent-Ionia-Clinton-
Including the cities of Greenville, Alma, Grand Rapids, Ionia,
and St. Johns
341 PM EDT Sat Apr 17 2021

.TONIGHT...
Sky/weather.........Mostly clear (15-25 percent). Areas of frost
                    after 0300 until 0600, then widespread frost.
Min temperature.....Around 33.
   24 hr trend......1 degree warmer.
Max humidity........87-92 percent.
   24 hr trend......Unchanged.
20-foot winds.......Northwest winds around 6 mph in the evening
                    becoming light.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......4000-4500 ft AGL decreasing to 0-200 ft AGL
                    overnight.
Transport winds.....Northwest around 5 mph.
Smoke dispersal.....0-100 (poor).
Pcpn Amount.........None.

.SUNDAY...
Sky/weather.........Mostly sunny (30-40 percent). Areas of frost
                    until 0900.
Max temperature.....Around 59.
   24 hr trend......1 degree warmer.
Min humidity........27-32 percent.
   24 hr trend......13 percent drier.
20-foot winds.......West winds 6 to 11 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......6900-7400 ft AGL increasing to 9400-9900 ft AGL
                    in the afternoon.
Transport winds.....West 5 to 10 mph.
Smoke dispersal.....900 (excellent) increasing to 1400 (excellent)
                    in the afternoon.
Pcpn Amount.........None.

.SUNDAY NIGHT...
Sky/weather.........Mostly clear (15-25 percent). Areas of frost
                    after 0200 until 0700.
Min temperature.....Around 38.
   24 hr trend......4 degrees warmer.
Max humidity........84-89 percent.
   24 hr trend......6 percent drier.
20-foot winds.......Southwest winds 5 to 8 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......200-700 ft AGL.
Transport winds.....Southwest around 5 mph.
Smoke dispersal.....0 (poor).
Pcpn Amount.........None.

.MONDAY...
Sky/weather.........Partly sunny (60-70 percent).
Max temperature.....55-60.
   24 hr trend......4 degrees cooler.
Min humidity........41-46 percent.
   24 hr trend......20 percent wetter.
20-foot winds.......West winds 12 to 17 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......6900-7400 ft AGL.
Transport winds.....West around 20 mph.
Smoke dispersal.....2300-2400 (excellent).
Pcpn Amount.........none to 0.03 in.


$$

MIZ065>067-072>074-180815-
Barry-Eaton-Ingham-Kalamazoo-Calhoun-Jackson-
Including the cities of Hastings, Charlotte, Lansing, Kalamazoo,
Battle Creek, and Jackson
341 PM EDT Sat Apr 17 2021

.TONIGHT...
Sky/weather.........Mostly clear (10-20 percent). Areas of frost
                    after 0100 until 0500, then widespread frost.
Min temperature.....Around 33.
   24 hr trend......2 degrees warmer.
Max humidity........91-96 percent.
   24 hr trend......Unchanged.
20-foot winds.......Northwest winds 5 to 6 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......3200-3700 ft AGL decreasing to 0-200 ft AGL
                    overnight.
Transport winds.....Northwest around 5 mph.
Smoke dispersal.....0-300 (poor to good).
Pcpn Amount.........None.

.SUNDAY...
Sky/weather.........Mostly sunny (40-50 percent). Areas of frost
                    until 0900.
Max temperature.....Around 60.
   24 hr trend......2 degrees warmer.
Min humidity........26-31 percent.
   24 hr trend......15 percent drier.
20-foot winds.......Northwest winds 5 to 10 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......7000-7500 ft AGL increasing to 9900-10400 ft
                    AGL in the afternoon.
Transport winds.....Northwest 5 to 10 mph.
Smoke dispersal.....800 (excellent) increasing to 1500 (excellent)
                    in the afternoon.
Pcpn Amount.........None.

.SUNDAY NIGHT...
Sky/weather.........Mostly clear (10-20 percent). Areas of frost
                    after 0200 until 0700.
Min temperature.....Around 38.
   24 hr trend......5 degrees warmer.
Max humidity........84-89 percent.
   24 hr trend......Unchanged.
20-foot winds.......Southwest winds 5 to 6 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......0-300 ft AGL.
Transport winds.....Southwest around 5 mph.
Smoke dispersal.....0 (poor).
Pcpn Amount.........None.

.MONDAY...
Sky/weather.........Mostly sunny (40-50 percent) until 1700, then
                    mostly cloudy (65-75 percent).
Max temperature.....58-63.
   24 hr trend......1 degree warmer.
Min humidity........36-41 percent.
   24 hr trend......11 percent wetter.
20-foot winds.......West winds 11 to 16 mph.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......7700-8200 ft AGL.
Transport winds.....West 20 to 25 mph.
Smoke dispersal.....2200-2400 (excellent).
Pcpn Amount.........none to 0.01 in.


$$

.FORECAST FOR DAYS 3 THROUGH 7...

.MONDAY NIGHT...Mostly cloudy with a chance of rain and snow
showers. Lows in the lower 30s. North winds 5 to 10 mph.
.TUESDAY...Mostly cloudy. Chance of rain and snow until midday, then
a chance of rain in the afternoon. Highs in the mid 40s. North winds
5 to 10 mph.
.TUESDAY NIGHT...Partly cloudy. Rain likely and a chance of snow in
the evening, then a chance of snow overnight. Lows in the mid 20s.
North winds 5 to 10 mph.
.WEDNESDAY...Partly sunny. Highs in the mid 40s. Northwest winds
9 to 14 mph.
.WEDNESDAY NIGHT...Partly cloudy. Widespread frost. Lows in the
upper 20s. West winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 50s. West winds 12 to
17 mph.
.THURSDAY NIGHT...Mostly clear. Areas of frost overnight. Lows in
the mid 30s.
.FRIDAY...Mostly sunny. Highs in the upper 50s.
.FRIDAY NIGHT...Partly cloudy. Lows in the upper 30s.
.SATURDAY...Partly sunny. Highs around 60.

$$


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