368  
FNUS53 KDTX 180742  
FWFDTX  
 
FIRE WEATHER PLANNING FORECAST FOR SOUTHEAST MICHIGAN  
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI  
342 AM EDT THU APR 18 2019  
   
DISCUSSION
 
A RAINY PERIOD CAN BE EXPECTED FROM TODAY INTO SATURDAY  
AS SHOWERS AND THUNDERSTORMS CROSS THE AREA TODAY IN ADVANCE OF A  
COLD FRONT. A WAVE OF LOW PRESSURE WILL THEN BRING WIDESPREAD RAIN  
TONIGHT INTO FRIDAY WITH ADDITIONAL RAINFALL EXPECTED WITH A  
TRAILING UPPER LEVEL LOW PRESSURE SYSTEM FROM FRIDAY NIGHT INTO  
SATURDAY.  
 
MIZ047-048-053-060-061-182000-  
MIDLAND-BAY-SAGINAW-SHIAWASSEE-GENESEE-  
INCLUDING THE CITIES OF MIDLAND-BAY CITY-SAGINAW-OWOSSO-FLINT  
342 AM EDT THU APR 18 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (65-75 PERCENT) UNTIL 6 AM, THEN  
CLOUDY (85-95 PERCENT). CHANCE OF SHOWERS  
AFTER 6 AM UNTIL NOON. CHANCE OF THUNDERSTORMS  
AFTER 6 AM. RAIN SHOWERS AFTER NOON. CHANCE OF  
PRECIPITATION 80 PERCENT.  
MAX TEMPERATURE.....59-64.  
24 HR TREND......7 DEGREES WARMER.  
MIN HUMIDITY........65-75 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH 15 TO 20 MPH BECOMING SOUTHWEST AROUND 10  
MPH IN THE LATE MORNING AND EARLY AFTERNOON,  
THEN BECOMING WEST EARLY IN THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......920-1420 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 15 MPH BECOMING WEST EARLY IN  
THE AFTERNOON.  
SMOKE DISPERSAL.....FAIR (260).  
PCPN AMOUNT.........0.26-0.50 IN.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY (95-100 PERCENT). RAIN SHOWERS UNTIL  
MIDNIGHT. CHANCE OF THUNDERSTORMS. RAIN AFTER MIDNIGHT.  
CHANCE OF PRECIPITATION 90 PERCENT.  
MIN TEMPERATURE.....AROUND 40.  
24 HR TREND......12 DEGREES COOLER.  
MAX HUMIDITY........85-91 PERCENT.  
24 HR TREND......5 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST 10 TO 15 MPH BECOMING NORTH AFTER  
MIDNIGHT.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......820-1020 FT AGL.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH BECOMING NORTH AFTER  
MIDNIGHT.  
SMOKE DISPERSAL.....POOR (10).  
PCPN AMOUNT.........0.26-0.50 IN.  
   
FRIDAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). RAIN UNTIL 9 AM,  
THEN RAIN LIKELY UNTIL NOON, THEN CHANCE OF  
RAIN. CHANCE OF PRECIPITATION 90 PERCENT.  
MAX TEMPERATURE.....44-49.  
24 HR TREND......19 DEGREES COOLER.  
MIN HUMIDITY........51-61 PERCENT.  
24 HR TREND......12 PERCENT DRIER.  
20-FOOT WINDS.......NORTH 15 TO 20 MPH.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......3560-4060 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 20 MPH BECOMING NORTHEAST  
AROUND 30 MPH IN THE LATE MORNING AND  
AFTERNOON.  
SMOKE DISPERSAL.....EXCELLENT (1140).  
PCPN AMOUNT.........0.11-0.25 IN.  
 

 
 
MIZ049-054-055-062-182000-  
HURON-TUSCOLA-SANILAC-LAPEER-  
INCLUDING THE CITIES OF BAD AXE-CARO-SANDUSKY-LAPEER  
342 AM EDT THU APR 18 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (65-75 PERCENT) UNTIL 6 AM, THEN  
MOSTLY CLOUDY (85-95 PERCENT). CHANCE OF RAIN  
SHOWERS AFTER 6 AM UNTIL NOON. CHANCE OF  
THUNDERSTORMS AFTER 6 AM. RAIN SHOWERS AFTER  
NOON. CHANCE OF PRECIPITATION 90 PERCENT.  
MAX TEMPERATURE.....61-66.  
24 HR TREND......10 DEGREES WARMER.  
MIN HUMIDITY........75-80 PERCENT.  
24 HR TREND......14 PERCENT WETTER.  
20-FOOT WINDS.......SOUTH 15 TO 20 MPH BECOMING SOUTHWEST EARLY IN  
THE AFTERNOON.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......1390-1890 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 15 MPH BECOMING WEST EARLY IN THE  
AFTERNOON.  
SMOKE DISPERSAL.....GOOD (500).  
PCPN AMOUNT.........0.26-0.50 IN.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY (95-100 PERCENT). RAIN SHOWERS UNTIL  
MIDNIGHT. CHANCE OF THUNDERSTORMS. RAIN AFTER MIDNIGHT.  
CHANCE OF PRECIPITATION 100 PERCENT.  
MIN TEMPERATURE.....36-41.  
24 HR TREND......11 DEGREES COOLER.  
MAX HUMIDITY........88-94 PERCENT.  
24 HR TREND......7 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST 10 TO 15 MPH BECOMING NORTH AFTER  
MIDNIGHT.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......630-830 FT AGL.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH BECOMING NORTH AFTER  
MIDNIGHT.  
SMOKE DISPERSAL.....POOR (10).  
PCPN AMOUNT.........0.51-0.75 IN.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT). RAIN UNTIL NOON, THEN  
CHANCE OF RAIN. CHANCE OF PRECIPITATION 100  
PERCENT.  
MAX TEMPERATURE.....39-44.  
24 HR TREND......23 DEGREES COOLER.  
MIN HUMIDITY........67-77 PERCENT.  
24 HR TREND......8 PERCENT DRIER.  
20-FOOT WINDS.......NORTH 15 TO 20 MPH.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......1500-2000 FT AGL.  
TRANSPORT WINDS.....NORTH AROUND 20 MPH INCREASING TO AROUND 30 MPH  
IN THE LATE MORNING AND AFTERNOON.  
SMOKE DISPERSAL.....EXCELLENT (690).  
PCPN AMOUNT.........0.26-0.50 IN.  
 

 
 
MIZ063-068>070-075-076-082-083-182000-  
ST CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-  
INCLUDING THE CITIES OF PORT HURON-HOWELL-PONTIAC-WARREN-ANN  
ARBOR-DETROIT-ADRIAN-MONROE  
342 AM EDT THU APR 18 2019  
   
TODAY
 
 
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT) UNTIL 6 AM, THEN  
MOSTLY CLOUDY (80-90 PERCENT). RAIN SHOWERS  
LIKELY AFTER 6 AM UNTIL NOON. CHANCE OF  
THUNDERSTORMS AFTER 6 AM. RAIN SHOWERS AFTER  
NOON. CHANCE OF PRECIPITATION 100 PERCENT.  
MAX TEMPERATURE.....65-70.  
24 HR TREND......9 DEGREES WARMER.  
MIN HUMIDITY........73-79 PERCENT.  
24 HR TREND......8 PERCENT WETTER.  
20-FOOT WINDS.......SOUTHWEST 10 TO 15 MPH.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......820-1320 FT AGL.  
TRANSPORT WINDS.....SOUTH 10 TO 15 MPH BECOMING SOUTHWEST AROUND 20  
MPH EARLY IN THE AFTERNOON.  
SMOKE DISPERSAL.....EXCELLENT (620).  
PCPN AMOUNT.........0.26-0.50 IN.  
   
TONIGHT
 
 
SKY/WEATHER.........CLOUDY (95-100 PERCENT). RAIN SHOWERS UNTIL  
9 PM. CHANCE OF THUNDERSTORMS UNTIL 3 AM. RAIN  
AFTER 9 PM. CHANCE OF PRECIPITATION 100  
PERCENT.  
MIN TEMPERATURE.....38-43.  
24 HR TREND......8 DEGREES COOLER.  
MAX HUMIDITY........92 PERCENT.  
24 HR TREND......3 PERCENT WETTER.  
20-FOOT WINDS.......NORTHWEST 10 TO 15 MPH BECOMING NORTH AFTER  
MIDNIGHT.  
HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......520-720 FT AGL.  
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH BECOMING NORTH AFTER  
MIDNIGHT.  
SMOKE DISPERSAL.....POOR (30).  
PCPN AMOUNT.........0.76-1.00 IN.  
   
FRIDAY
 
 
SKY/WEATHER.........CLOUDY (90-100 PERCENT). RAIN UNTIL 3 PM, THEN  
CHANCE OF RAIN. CHANCE OF PRECIPITATION 100  
PERCENT.  
MAX TEMPERATURE.....42-47.  
24 HR TREND......22 DEGREES COOLER.  
MIN HUMIDITY........67-77 PERCENT.  
24 HR TREND......6 PERCENT DRIER.  
20-FOOT WINDS.......NORTH 15 TO 20 MPH.  
HAINES INDEX........2 OR VERY LOW POTENTIAL FOR LARGE PLUME  
DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......1020-1520 FT AGL.  
TRANSPORT WINDS.....NORTH 25 TO 30 MPH.  
SMOKE DISPERSAL.....GOOD (530).  
PCPN AMOUNT.........0.26-0.50 IN.  
 

 
 
   
FORECAST DAYS 3 THROUGH 7
 
 
   
SATURDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN. LOWS IN THE UPPER  
30S. HIGHS AROUND 50. NORTH WINDS AROUND 15 MPH.    
SUNDAY
 
WARMER. PARTLY CLOUDY. CHANCE OF RAIN. LOWS IN THE UPPER  
30S. HIGHS IN THE LOWER 60S. NORTHWEST WINDS AROUND 5 MPH.    
MONDAY
 
MOSTLY CLOUDY. CHANCE OF RAIN. LOWS IN THE MID 40S. HIGHS  
IN THE LOWER 60S. SOUTHWEST WINDS AROUND 10 MPH.    
TUESDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN. LOWS IN THE UPPER 30S.  
HIGHS IN THE MID 50S.    
WEDNESDAY
 
MOSTLY CLOUDY WITH CHANCE OF RAIN. LOWS IN THE UPPER  
30S. HIGHS AROUND 60.  
 

 
 
IRL  
 
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