Suppression Forecast
Issued by NWS Detroit/Pontiac, MI

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FNUS73 KDTX 211418
FWSDTX

SPOT FORECAST FOR SEVEN LAKES...MI DNR
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1018 AM EDT THU MAY 21 2015

FORECAST IS BASED ON IGNITION TIME OF 1300 EDT ON MAY 21.

IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...HIGH CLOUDS WILL TEND TO THIN DURING THE AFTERNOON
BUT COVERAGE WILL REMAIN GREAT ENOUGH TO LIMIT MAX TEMPERATURE TO
THE UPPER 60S. WESTERLY SURFACE WIND WILL REMAIN CONSISTENT IN
DIRECTION AND INCREASE MODESTLY AHEAD OF THE COLD FRONT SETTLING
THROUGH THE NORTHERN GREAT LAKES DURING THE DAY.

OUTSIDE OF A CHANCE FOR SHOWERS WITH THE FRONT TONIGHT...THE
REMAINDER OF THE WEEK WILL BE DOMINATED BY DRY AND QUIET
CONDITIONS. RELATIVE HUMIDITIES WILL FALL TO NEAR 30 PERCENT TODAY
AND TO AS LOW AS 25 PERCENT FOR AREAS WELL INLAND ON FRIDAY AND
SATURDAY. THE APPROACH OF A LOW PRESSURE SYSTEM WILL THEN BRING
WARMER AND MORE HUMID CONDITIONS SUNDAY AND MONDAY...WITH ROUNDS
OF SHOWERS AND THUNDERSTORMS EXPECTED SUNDAY NIGHT THROUGH EARLY
NEXT WEEK.

.TODAY...

SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT).
MAX TEMPERATURE.....63-68.
MIN HUMIDITY........32 PERCENT.
WIND (20 FT)........WEST WINDS 9 TO 14 MPH.
TRANSPORT WINDS.....WEST 9 TO 18 MPH...INCREASING TO 20 TO 22 MPH
                    LATE.
MIXING HEIGHT.......2100 FT AGL...INCREASING TO 5100 FT AGL LATE IN
                    THE MORNING...THEN INCREASING TO 7900 FT AGL
                    EARLY IN THE AFTERNOON...INCREASING TO 8700 FT
                    AGL BY MID AFTERNOON...DECREASING TO 5000 FT
                    AGL.
VENTILATION RATE....EXCELLENT (MAX...1400).

TIME (EDT)      1PM 2PM 3PM 4PM 5PM 6PM 7PM
SKY (%).........57  53  50  47  44  45  46
WEATHER COV.....
WEATHER TYPE....
TEMP............61  63  65  66  66  65  64
RH..............37  35  33  32  32  33  35
20 FT WIND DIR..W   W   W   W   W   W   W
20 FT WIND SPD..10  11  11  12  12  11  10
20 FT WIND GUST.20  20  25  25  25  20  20
MIX HGT (KFT)...7.3 7.9 8.5 8.7 8.3 6.9 5.0
VRATE (KT-FT)...900 100012001400140013001000

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY (50-60 PERCENT)BECOMING MOSTLY
                    CLOUDY (70-80 PERCENT)BECOMING MOSTLY CLEAR
                    (30-40 PERCENT) OVERNIGHT. A CHANCE
                    OF RAIN SHOWERS.
MIN TEMPERATURE.....AROUND 41.
MAX HUMIDITY........75 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 11 MPH.
TRANSPORT WINDS.....WEST 15 TO 23 MPH...BECOMING NORTHWEST 10 TO 17
                    MPH AFTER MIDNIGHT.

TIME (EDT)      8 PM   10 PM  MIDNGT 2 AM   4 AM   6 AM
SKY (%).........48     58     70     84     55     30
WEATHER COV.....S CHC  CHANCE CHANCE CHANCE CHANCE S CHC
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
TEMP............61     55     51     49     44     41
RH..............39     52     63     69     72     75
20 FT WIND DIR..W      W      W      NW     NW     NW
20 FT WIND SPD..10     7      6      6      7      7
20 FT WIND GUST.20     15     10     10     10     10

$$

FORECASTER...TILLEY
REQUESTED BY...JIM FISHER
TYPE OF REQUEST...PRESCRIBED
.TAG 20150521.SEVEN.01/DTX


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