860 
FNUS73 KGRR 240945
FWSGRR

Spot Forecast for Stevenson Rd. East Rx Burn...MIDNR
National Weather Service Grand Rapids MI
545 AM EDT Wed Apr 24 2024

Forecast is based on ignition time of 1200 EDT on April 24. 
If conditions become unrepresentative, contact the National Weather
Service.

Please contact our office at (616) 949-5150, if you have questions
or concerns with this forecast.

.DISCUSSION...
Cold downsloping flow today. Winds will be out of the northeast and will
weaken as the day continues. RH/s will drop as the day continues, reaching
around 30 percent this afternoon. Expect skies to clear this morning with 
sunny skies this afternoon and mostly clear skies overnight. 

.REST OF TODAY...

Sky/weather.........Mostly sunny (20-30 percent). 
Temperature.........41 at ignition...Max 50. 
RH..................54 percent at ignition...Min 31 percent. 
Wind (20 ft)........Winds northeast at 10 mph at 
                    ignition...otherwise Northeast winds 6 to 10 
                    mph. 
Mixing height.......3500 ft AGL at ignition...otherwise 4900 ft 
                    AGL. 
Mixing winds........North 7 to 15 mph. 
Smoke dispersal.....520 /good/ at ignition. Max...520 /good/. 
Haines Index........4 or low potential for large plume dominated 
                    fire growth at ignition...max 5. 

TIME (EDT)      NOON   2 PM   4 PM   6 PM   8 PM   10 PM  
Sky (%).........49     11     3      2      4      2      
Weather cov.....                                          
Weather type....NONE   NONE   NONE   NONE   NONE   NONE   
Tstm cov........                                          
Temp............41     46     49     49     47     38     
RH..............54     42     34     31     37     50     
20 ft wind......NE 10  NE 8   NE 7   NE 7   E 8    E 9    
20 ft wind gust.15     13     12     10     10     15     
Mix hgt (ft)....3500   4000   4800   4800   1100   600    
Mixing wind.....N 15   N 10   N 9    N 8    E 9    E 13   
Haines index....4      5      5      5      4      4      
Smoke disprsl...520    420    440    390    100    80     

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent). Widespread frost 
                    overnight. 
Temperature.........Min 26. 
RH..................Max 75 percent. 
Wind (20 ft)........East winds 5 to 10 mph becoming light, then 
                    becoming east around 5 mph early in the 
                    morning. 
Mixing height.......500 ft AGL. 
Mixing winds........East 7 to 13 mph. 
Smoke dispersal.....40 (poor). 
Haines Index........4 or low potential for large plume dominated 
                    fire growth. 

.THURSDAY...

Sky/weather.........Sunny (20-30 percent). 
Temperature.........Max 55. 
RH..................Min 29 percent. 
Wind (20 ft)........Southeast winds 6 to 7 mph. 
Mixing height.......5200 ft AGL. 
Mixing winds........East 6 to 8 mph. 
Smoke dispersal.....60 (poor) early in the morning increasing to 
                    390 (good) in the afternoon. 
Haines Index........5 or moderate potential for large plume 
                    dominated fire growth. 

$$
Forecaster...Ceru
Requested by...Jennifer Hansen
Type of request...PRESCRIBED
.TAG 2412054.0/GRR
.DELDT 04/24/24
.FormatterVersion 2.0.0
.EMAIL hansenj4@michigan.gov