Suppression Forecast
Issued by NWS Chicago, IL

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000
FNUS73 KLOT 161425
FWSLOT

SPOT FORECAST FOR PLEASANT VALLEY UNIT 2...MCHENRY COUNTY CONSERVATION DISTRICT
NATIONAL WEATHER SERVICE CHICAGO IL
925 AM CDT WED APR 16 2014

FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON APRIL 16.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.

.DISCUSSION...
LOW PRESSURE WILL SHIFT EASTWARD ACROSS WESTERN SECTIONS OF IOWA THIS
AFTERNOON. THIS WILL SET UP A PERSISTENT SOUTHEASTERLY WIND...WHICH
WILL INCREASE IN MAGNITUDE BY MID DAY. WIND GUSTS UP AROUND 30 MPH ARE
EXPECTED THIS AFTERNOON. THESE SOUTHEASTERLY WINDS WILL ALLOW TEMPERATURES
TO WARM INTO THE LOWER 50S THIS AFTERNOON...AND THIS SHOULD ALLOW
THE RELATIVE HUMIDITY TO DROP INTO THE 30S THIS AFTERNOON.


.TODAY...

SKY/WEATHER.........PARTLY SUNNY.
TEMPERATURE.........AROUND 45 AT IGNITION...MAX 52.
RH..................45 PERCENT AT IGNITION...MIN 37 PERCENT.
WIND (20 FT)........WINDS SOUTH-SOUTHEAST AROUND 15 MPH AT
                    IGNITION...OTHERWISE SOUTHEAST WINDS
                    14 TO 18 MPH WITH GUSTS UP TO 33 MPH.
MIXING HEIGHT.......500-1000 FT AGL INCREASING TO AROUND 2500 FT AGL
                    AT IGNITION...OTHERWISE 2500-4500 FT AGL.
TRANSPORT WINDS.....SOUTH 20 TO 29 MPH INCREASING TO AROUND 30 MPH
                    LATE IN THE AFTERNOON.
MIXING TEMP 1700FT..43.
SMOKE DISPERSAL.....GOOD /83000 KNOT-FT/ AT IGNITION. MAX...VERY
                    GOOD /118500 KNOT-FT/.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
SKY (%).........47  56  55  57  59  61  62  63
WEATHER COV.....
WEATHER TYPE....
TEMP............45  47  48  49  50  51  51  49
RH..............45  43  42  40  39  37  37  40
20FT WIND DIR...160 170 170 170 170 160 160 150
20FT SPEED(MPH).15  15  16  16  16  15  14  13
20FT SPEED(KT)..13  13  14  14  14  13  12  11
20FT GUST(MPH)..28  30  32  33  33  32  30  28
20FT GUST(KT)...24  26  28  29  29  28  26  24
MIX HGT (KFT)...2.5 3.5 4.0 4.5 4.5 4.5 3.5 2.5
TRANSP WIND DIR.170 170 170 170 170 170 160 160
TRANSP WIND SPD.28  28  29  29  29  29  29  30
VRATE KT-FT/100083  91  103 108 113 119 92  68

.TONIGHT...

SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY.
TEMPERATURE.........MIN 41.
RH..................MAX 70 PERCENT.
WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO AROUND
                    26 MPH.
MIXING HEIGHT.......500-1500 FT AGL.
TRANSPORT WINDS.....SOUTH 31 TO 36 MPH.
MIXING TEMP 1700FT..MISSING.
SMOKE DISPERSAL.....POOR TO FAIR (17500-41500 KNOT-FT).

TIME (CDT)      7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM
SKY (%).........63  62  60  59  62  65  68  72  76  80  81  82
WEATHER COV.....
WEATHER TYPE....
TEMP............47  46  45  44  43  42  42  41  41  41  41  41
RH..............45  49  53  55  57  62  62  65  67  67  67  70
20FT WIND DIR...150 150 150 150 150 150 160 160 170 170 180 190
20FT SPEED(MPH).10  10  10  10  10  10  10  10  10  10  10  9
20FT SPEED(KT)..9   9   8   8   9   9   9   9   9   9   8   8
20FT GUST(MPH)..26  24  23  22  23  24  25  25  26  25  24  22
20FT GUST(KT)...23  21  20  19  20  21  22  22  23  22  21  19
MIX HGT (KFT)...1.5 1.0 1.0 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 1.0
TRANSP WIND DIR.160 160 160 160 170 170 180 180 190 190 200 200
TRANSP WIND SPD.31  32  33  35  36  36  36  35  33  33  35  36
VRATE KT-FT/100042  35  27  19  20  20  21  19  18  18  23  27

.THURSDAY...

MIXING TEMP 1700FT..53.
SMOKE DISPERSAL.....POOR TO GOOD (20000-66000 KNOT-FT).

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
VRATE KT-FT/100031  45  54  63  64  66  66  62  61  57  39  20

$$
FORECASTER...BIRK
REQUESTED BY...JOHN PETERS
TYPE OF REQUEST...PRESCRIBED
.TAG 20140416.PLEAS.01/LOT







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