Mon May 20 15:23:32 EDT 2024

Montcalm-Gratiot-Kent-Ionia-Clinton-
Including the cities of Greenville, Alma, Grand Rapids, Ionia, 
and St. Johns
323 PM EDT Mon May 20 2024

.TONIGHT...
Sky/weather.........Mostly cloudy (75-85 percent) until 2 AM, then 
                    partly cloudy (60-70 percent) until 5 AM, then 
                    mostly cloudy (65-75 percent). Rain showers 
                    with thunderstorms likely until 2 AM, then a 
                    chance of showers and thunderstorms. 
Chance of pcpn......80 percent. 
Min temperature.....56-61. 
   24 hr trend......4 degrees warmer. 
Max humidity........95-100 percent. 
   24 hr trend......Unchanged. 
20-foot winds.......Southwest winds 5 to 10 mph. 
Haines Index........3 or very low potential for large plume 
                    dominated fire growth. 
Mixing height.......800-1300 ft AGL. 
Transport winds.....Southwest around 15 mph. 
Smoke dispersal.....210-230 (fair). 
Pcpn Amount.........0.01-0.29 in. 

.TUESDAY...
Sky/weather.........Mostly sunny (40-50 percent). Chance of showers 
                    and thunderstorms. 
Chance of pcpn......40 percent. 
Max temperature.....Around 84. 
   24 hr trend......1 degree warmer. 
Min humidity........44-49 percent. 
   24 hr trend......1 percent drier. 
20-foot winds.......Southwest winds 6 to 11 mph. 
Haines Index........4 or low potential for large plume dominated 
                    fire growth. 
Mixing height.......5000-5500 ft AGL. 
Transport winds.....Southwest around 10 mph. 
Smoke dispersal.....350-650 (good to excellent). 
Pcpn Amount.........none to 0.10 in. 

.TUESDAY NIGHT...
Sky/weather.........Partly cloudy (45-55 percent). Chance of 
                    showers until 2 AM. Chance of thunderstorms. 
                    Showers likely after 2 AM. 
Chance of pcpn......60 percent. 
Min temperature.....62-67. 
   24 hr trend......7 degrees warmer. 
Max humidity........85-90 percent. 
   24 hr trend......Unchanged. 
20-foot winds.......South winds 10 to 15 mph with gusts to around 
                    26 mph. 
Haines Index........3 or very low potential for large plume 
                    dominated fire growth. 
Mixing height.......1400-1900 ft AGL. 
Transport winds.....South 15 to 20 mph. 
Smoke dispersal.....250-370 (fair to good). 
Pcpn Amount.........0.12-0.54 in. 

.WEDNESDAY...
Sky/weather.........Mostly sunny (25-35 percent). Chance of showers 
                    after 2 PM. 
Chance of pcpn......30 percent in the afternoon. 
Max temperature.....75-80. 
   24 hr trend......10 degrees cooler. 
Min humidity........36-41 percent. 
   24 hr trend......6 percent drier. 
20-foot winds.......Southwest winds 15 to 20 mph with gusts to 
                    around 29 mph. 
Haines Index........5 or moderate potential for large plume 
                    dominated fire growth. 
Mixing height.......3900-4400 ft AGL. 
Transport winds.....Southwest around 25 mph. 
Smoke dispersal.....1200-1220 (excellent). 
Pcpn Amount.........none to 0.01 in.