151  
FNUS53 KDTX 182014  
FWFDTX  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST MICHIGAN  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
414 PM EDT SAT MAY 18 2024  
   
DISCUSSION
 
DRY CONDITIONS TODAY BRING MINIMUM RH VALUES INTO THE  
40S THIS AFTERNOON, AND INTO THE 30S ACROSS THE TRI-CITIES.  
SCATTERED SHOWERS AND THUNDERSTORMS RETURN TOMORROW AFTERNOON AND  
EVENING AS A WARM AND HUMID AIRMASS MOVES IN. THIS WILL INCREASE  
MINIMUM RH VALUES BETWEEN 40 TO 50 PERCENT THROUGH TUESDAY AS  
DAYTIME TEMPERATURES HOLD ABOVE NORMAL IN THE 80S WITH OVERNIGHT  
LOWS IN THE UPPER 50S TO MID 60S. ACTIVE WEATHER STRETCH CONTINUES  
EARLY TO MIDDLE OF NEXT WEEK WITH DAILY CHANCES FOR PRECIPITATION.  
 
MIZ047-048-053-060-061-182130-  
MIDLAND-BAY-SAGINAW-SHIAWASSEE-GENESEE-  
INCLUDING THE CITIES OF MIDLAND-BAY CITY-SAGINAW-OWOSSO-FLINT  
414 PM EDT SAT MAY 18 2024  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (25-35 PERCENT).  
MIN TEMPERATURE.....AROUND 61.  
24 HR TREND......5 DEGREES WARMER.  
MAX HUMIDITY........86-96 PERCENT.  
24 HR TREND......10 PERCENT DRIER.  
20-FOOT WINDS.......SOUTH 5 TO 10 MPH.  
HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......840-1040 FT AGL.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
SMOKE DISPERSAL.....POOR (15).  
PCPN AMOUNT.........NONE.  
   
SUNDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). SLIGHT CHANCE OF  
SHOWERS AND THUNDERSTORMS AFTER 11 AM. CHANCE OF  
PRECIPITATION 20 PERCENT.  
MAX TEMPERATURE.....76-80.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........36-46 PERCENT.  
24 HR TREND......12 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH BECOMING NORTH EARLY IN  
THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......5300-5800 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH BECOMING NORTH EARLY IN  
THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (479).  
PCPN AMOUNT.........0.06-0.10 IN.  
   
SUNDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).  
MIN TEMPERATURE.....54-58.  
24 HR TREND......3 DEGREES COOLER.  
MAX HUMIDITY........77-87 PERCENT.  
24 HR TREND......21 PERCENT DRIER.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......560-760 FT AGL.  
TRANSPORT WINDS.....EAST AROUND 10 MPH BECOMING SOUTHEAST AFTER  
MIDNIGHT.  
SMOKE DISPERSAL.....POOR (14).  
PCPN AMOUNT.........NONE.  
   
MONDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). CHANCE OF RAIN  
SHOWERS AFTER 2 PM. CHANCE OF PRECIPITATION 30  
PERCENT.  
MAX TEMPERATURE.....78-82.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........38-48 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH BECOMING SOUTH 10 TO 15  
MPH IN THE LATE MORNING AND AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......5030-5530 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH BECOMING SOUTHWEST IN THE  
LATE MORNING AND AFTERNOON.  
SMOKE DISPERSAL.....EXCELLENT (825).  
PCPN AMOUNT.........0.01-0.05 IN.  
 

 
 
MIZ049-054-055-062-182130-  
HURON-TUSCOLA-SANILAC-LAPEER-  
INCLUDING THE CITIES OF BAD AXE-CARO-SANDUSKY-LAPEER  
414 PM EDT SAT MAY 18 2024  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).  
MIN TEMPERATURE.....52-58.  
24 HR TREND......4 DEGREES WARMER.  
MAX HUMIDITY........90-100 PERCENT.  
24 HR TREND......UNCHANGED.  
20-FOOT WINDS.......SOUTH 5 TO 10 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......800-1000 FT AGL.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH.  
SMOKE DISPERSAL.....POOR (17).  
PCPN AMOUNT.........NONE.  
   
SUNDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). SLIGHT CHANCE OF  
SHOWERS AFTER 11 AM. CHANCE OF  
PRECIPITATION 20 PERCENT.  
MAX TEMPERATURE.....74-80.  
24 HR TREND......2 DEGREES WARMER.  
MIN HUMIDITY........45-55 PERCENT.  
24 HR TREND......2 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST AROUND 5 MPH BECOMING NORTHWEST IN  
THE LATE MORNING AND EARLY AFTERNOON, THEN  
BECOMING NORTHEAST EARLY IN THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......4280-4780 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH BECOMING NORTHWEST IN  
THE LATE MORNING AND EARLY AFTERNOON, THEN  
BECOMING NORTHEAST EARLY IN THE AFTERNOON.  
SMOKE DISPERSAL.....GOOD (440).  
PCPN AMOUNT.........0.06-0.10 IN.  
   
SUNDAY NIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT).  
MIN TEMPERATURE.....50-54.  
24 HR TREND......6 DEGREES COOLER.  
MAX HUMIDITY........71-81 PERCENT.  
24 HR TREND......30 PERCENT DRIER.  
20-FOOT WINDS.......NORTHEAST 5 TO 10 MPH BECOMING EAST AFTER  
MIDNIGHT.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......400-600 FT AGL.  
TRANSPORT WINDS.....EAST AROUND 10 MPH BECOMING SOUTHEAST AFTER  
MIDNIGHT.  
SMOKE DISPERSAL.....POOR (2).  
PCPN AMOUNT.........NONE.  
   
MONDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). CHANCE OF  
PRECIPITATION 20 PERCENT.  
MAX TEMPERATURE.....76-80.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........39-49 PERCENT.  
24 HR TREND......8 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH BECOMING SOUTH 10 TO 15  
MPH IN THE LATE MORNING AND AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......5120-5620 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH BECOMING SOUTHWEST IN THE  
LATE MORNING AND AFTERNOON.  
SMOKE DISPERSAL.....EXCELLENT (798).  
PCPN AMOUNT.........0.01-0.05 IN.  
 

 
 
MIZ063-068>070-075-076-082-083-182130-  
ST CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-  
INCLUDING THE CITIES OF PORT HURON-HOWELL-PONTIAC-WARREN-ANN  
ARBOR-DETROIT-ADRIAN-MONROE  
414 PM EDT SAT MAY 18 2024  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLEAR (25-35 PERCENT). PATCHY FOG AFTER  
2 AM.  
MIN TEMPERATURE.....56-60.  
24 HR TREND......1 DEGREE COOLER.  
MAX HUMIDITY........90-100 PERCENT.  
24 HR TREND......4 PERCENT DRIER.  
20-FOOT WINDS.......SOUTH 5 TO 10 MPH.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......740-940 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH.  
SMOKE DISPERSAL.....POOR (10).  
PCPN AMOUNT.........NONE.  
   
SUNDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). CHANCE OF SHOWERS  
AND THUNDERSTORMS AFTER 2 PM. CHANCE OF  
PRECIPITATION 40 PERCENT.  
MAX TEMPERATURE.....80-86.  
24 HR TREND......3 DEGREES WARMER.  
MIN HUMIDITY........42-52 PERCENT.  
24 HR TREND......6 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 5 TO 10 MPH BECOMING WEST EARLY IN  
THE AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......5220-5720 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH BECOMING WEST IN THE  
LATE MORNING AND AFTERNOON.  
SMOKE DISPERSAL.....GOOD (490).  
PCPN AMOUNT.........0.11-0.25 IN.  
   
SUNDAY NIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT). CHANCE OF  
SHOWERS AND THUNDERSTORMS UNTIL 11 PM. CHANCE OF  
PRECIPITATION 30 PERCENT.  
MIN TEMPERATURE.....56-60.  
24 HR TREND......3 DEGREES WARMER.  
MAX HUMIDITY........90-100 PERCENT.  
24 HR TREND......4 PERCENT WETTER.  
20-FOOT WINDS.......EAST 5 TO 10 MPH.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......600-800 FT AGL.  
TRANSPORT WINDS.....EAST 5 TO 10 MPH.  
SMOKE DISPERSAL.....POOR (4).  
PCPN AMOUNT.........NONE.  
   
MONDAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). CHANCE OF  
PRECIPITATION 20 PERCENT.  
MAX TEMPERATURE.....82-88.  
24 HR TREND......1 DEGREE WARMER.  
MIN HUMIDITY........34-44 PERCENT.  
24 HR TREND......6 PERCENT DRIER.  
20-FOOT WINDS.......SOUTHEAST AROUND 5 MPH BECOMING SOUTH 10 TO 15  
MPH IN THE LATE MORNING AND AFTERNOON.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH.  
MIXING HEIGHT.......5640-6140 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 10 MPH BECOMING SOUTHWEST IN THE  
LATE MORNING AND AFTERNOON.  
SMOKE DISPERSAL.....EXCELLENT (856).  
PCPN AMOUNT.........0.01-0.05 IN.  
 

 
 
   
FORECAST DAYS 3 THROUGH 7
 
 
   
TUESDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS  
IN THE MID 60S. HIGHS IN THE MID 80S. SOUTH WINDS AROUND 10 MPH.    
WEDNESDAY
 
PARTLY CLOUDY. SHOWERS LIKELY AND CHANCE OF  
THUNDERSTORMS. LOWS IN THE MID 60S. HIGHS IN THE UPPER 70S.  
SOUTHWEST WINDS AROUND 15 MPH.    
THURSDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS  
IN THE MID 50S. HIGHS IN THE LOWER 70S. WEST WINDS AROUND 10 MPH.    
FRIDAY
 
MOSTLY CLEAR. LOWS IN THE LOWER 50S. HIGHS IN THE LOWER  
70S.    
SATURDAY
 
PARTLY CLOUDY. CHANCE OF SHOWERS. LOWS IN THE LOWER 50S.  
HIGHS IN THE LOWER 70S.  
 

 
 
AA  
 
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