Suppression Forecast
Issued by NWS Chicago, IL

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000
FNUS73 KLOT 171430
FWSLOT

SPOT FORECAST FOR PLEASANT VALLEY UNIT 6...MCHENRY COUNTY CONSERVATION DISTRICT
NATIONAL WEATHER SERVICE CHICAGO IL
930 AM CDT THU APR 17 2014

FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON APRIL 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
LOW PRESSURE IS OVER SOUTHERN WISCONSIN AND ITS COLD FRONT WILL
SWEEP THROUGH THE REGION THIS MORNING WITH WINDS BECOMING WEST
BEHIND THE FRONT AROUND 10 MPH.  CLOUD COVER WILL INCREASE AS
WELL BEHIND THE FRONT.  THE LOW CONTINUES OFF TO THE NORTHEAST
THIS EVENING AND HIGH PRESSURE BUILDS IN TO THE REGION.  WINDS
WILL DIMINISH SIGNIFICANTLY TO AROUND 5 MPH THIS EVENING AND
BECOME NORTH LATE THIS EVENING.

WINDS BECOME NORTHEAST FRIDAY MORNING AND THEN CONTINUE TO TURN
TO EAST AT 10 MPH BY LATE FRIDAY AFTERNOON.  MAX MIXING HEIGHTS
WILL BE A BIT LOWER THAN TODAY...AROUND 3000 FT. IT WILL ALSO BE
DRIER TOMORROW WITH MIN RH VALUES IN THE MID 30 PERCENT RANGE.


.REST OF TODAY...

SKY/WEATHER.........PARTLY CLOUDY BECOMING MOSTLY CLOUDY.
TEMPERATURE.........53 AT IGNITION...MAX 56.
RH..................54 PERCENT AT IGNITION...MIN 49 PERCENT.
WIND (20 FT)........WINDS SOUTHWEST AT 9 MPH AT
                    IGNITION...OTHERWISE WEST WINDS 5 TO 10 MPH
                    WITH GUSTS TO AROUND 21 MPH.
MIXING HEIGHT.......1500-2500 FT AGL INCREASING TO 3000 FT AGL AT
                    IGNITION...OTHERWISE 3000-3500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 20 TO 29 MPH BECOMING WEST 10 TO 16
                    MPH IN THE AFTERNOON.
MIXING TEMP 1700FT..47.
SMOKE DISPERSAL.....FAIR /48500 KNOT-FT/ AT IGNITION. MAX...FAIR
                    /48500 KNOT-FT/.

TIME (CDT)      12P 1PM 2PM 3PM 4PM 5PM 6PM
SKY (%).........100 99  88  75  62  63  66
WEATHER COV.....
WEATHER TYPE....
TEMP............53  55  55  55  56  55  54
RH..............54  53  53  53  49  51  54
20FT WIND DIR...240 250 250 250 260 260 270
20FT SPEED(MPH).7   7   7   7   6   6   5
20FT SPEED(KT)..6   6   6   6   6   5   4
20FT GUST(MPH)..18  16  15  14  13  10  8
20FT GUST(KT)...16  14  13  12  11  9   7
MIX HGT (KFT)...3.0 3.5 3.5 3.5 3.5 3.0 3.0
TRANSP WIND DIR.250 250 260 260 260 260 270
TRANSP WIND SPD.20  16  15  14  13  12  10
VRATE KT-FT/100049  48  43  39  36  32  29

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY.
TEMPERATURE.........MIN 36.
RH..................MAX 92 PERCENT.
WIND (20 FT)........NORTHEAST WINDS AROUND 5 MPH.
MIXING HEIGHT.......2000-3000 FT AGL DECREASING TO 500-1500 FT AGL
                    IN THE LATE EVENING AND OVERNIGHT.
TRANSPORT WINDS.....NORTH 3 TO 9 MPH.
MIXING TEMP 1700FT..MISSING.
SMOKE DISPERSAL.....POOR TO POOR (1500-25000 KNOT-FT).

TIME (CDT)      7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM
SKY (%).........67  63  54  50  48  47  46  46  46  45  39  34
WEATHER COV.....
WEATHER TYPE....
TEMP............53  51  49  47  45  43  41  39  38  37  37  36
RH..............57  61  63  68  73  79  85  92  92  92  89  89
20FT WIND DIR...270 290 310 320 330 000 010 010 020 030 030 030
20FT SPEED(MPH).4   4   4   4   4   4   4   4   3   3   3   3
20FT SPEED(KT)..3   3   3   3   3   3   3   3   3   3   3   3
20FT GUST(MPH)..6   6   6   6   6   6   6   6   6   5   5   5
20FT GUST(KT)...5   5   5   5   5   5   5   5   5   4   4   4
MIX HGT (KFT)...3.0 2.5 2.0 1.5 1.5 1.0 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.270 270 280 290 300 310 310 320 320 330 340 340
TRANSP WIND SPD.9   8   7   6   5   5   3   3   3   3   3   3
VRATE KT-FT/100025  19  14  9   6   3   2   2   2   2   2   2

.FRIDAY...

MIXING TEMP 1700FT..50.
SMOKE DISPERSAL.....POOR TO POOR (1500-10000 KNOT-FT).

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
VRATE KT-FT/10002   3   4   5   6   8   10  10  10  10  10  10

$$
FORECASTER...ENDERLEN
REQUESTED BY...JOHN PETERS
TYPE OF REQUEST...PRESCRIBED
.TAG 20140417.PLEAS.01/LOT








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