Suppression Forecast
Issued by NWS Chicago, IL

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000
FNUS73 KLOT 222019
FWSLOT

Spot Forecast for Dune Ridge Rx...Indiana Dunes National Lakeshore
National Weather Service Chicago IL
319 PM CDT Sun Apr 22 2018

Forecast is based on ignition time of 1600 CDT on April 22.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (815) 834-0666, if you have questions
or concerns with this forecast.

.DISCUSSION...
Onshore flow will continue today. Based on current temp of 49F and
observed aircraft soundings out of Midway Airport, it would appear
the current mixing height is around 400 ft. Mixing height and temps
are unlikely to rise much, if at all this afternoon.

.REST OF TODAY...

Sky/weather.........Mostly sunny.
Temperature.........49 at ignition...Max 49.
RH..................53 percent at ignition...Min 44 percent.
Wind (20 ft)........Winds northeast at 12 mph at
                    ignition...otherwise Northeast winds 9 to 12
                    mph.
Chance of pcpn......0 percent.
LAL.................No Tstms.
Mixing height.......400 ft.
Transport winds.....East 14 to 15 mph.
MIXING TEMP 1700FT..60.
Smoke dispersal.....Poor /1700 knot-ft/.

TIME (CDT)      4PM 5PM 6PM
SKY (%).........13  17  21
WEATHER COV.....
WEATHER TYPE....
TEMP............47  47  46
RH..............53  51  53
20 FT WIND DIR..NE  NE  NE
20 FT WIND SPD..12  11  9
20 FT WIND GUST.20  20  15
MIX HGT (KFT)...0.4 0.3 0.3
TRANSP WIND DIR.060 070 080
TRANSP WIND SPD.15  15  14
CHC OF PCPN (%).0   0   0
LAL.............1   1   1
VRATE KT-FT/10001   1   1

.TONIGHT...

Sky/weather.........Mostly clear.
Temperature.........Min 40.
RH..................Max 76 percent.
Wind (20 ft)........East winds 7 to 8 mph.
Chance of pcpn......0 percent.
LAL.................No Tstms.
Mixing height.......100 ft AGL.
Transport winds.....East 10 to 13 mph.
MIXING TEMP 1700FT..N/A.
Smoke dispersal.....Poor (900 knot-ft).

TIME (CDT)      7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM
SKY (%).........25  24  24  23  21  18  15  19  24  28  30  31
WEATHER COV.....
WEATHER TYPE....
TEMP............46  46  45  45  44  43  42  41  41  41  40  40
RH..............53  55  58  60  62  65  67  70  70  70  73  76
20 FT WIND DIR..NE  E   E   E   E   E   E   E   E   E   E   E
20 FT WIND SPD..8   8   8   8   8   8   8   8   7   7   7   7
20 FT WIND GUST.15  15  15  15  15  15  15  15  10  10  10  10
MIX HGT (KFT)...0.2 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
TRANSP WIND DIR.090 090 090 090 090 090 100 090 080 080 080 080
TRANSP WIND SPD.13  13  13  13  13  13  13  13  12  10  10  10
CHC OF PCPN (%).0   0   0   0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
VRATE KT-FT/10001   1   1   1   1   1   1   1   1   1   1   1

.MONDAY...

Sky/weather.........Mostly sunny then becoming partly cloudy then
                    becoming mostly cloudy.
Temperature.........Max 56.
RH..................Min 51 percent.
Wind (20 ft)........Northeast winds 6 to 7 mph.
Chance of pcpn......10 percent.
LAL.................No Tstms.
Mixing height.......100-500 ft AGL.
Transport winds.....East 9 to 12 mph.
MIXING TEMP 1700FT..65.
Smoke dispersal.....Poor (800 knot-ft).

TIME (CDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM
SKY (%).........33  33  34  34  39  44  49  56  63  70  75  79
WEATHER COV.....
WEATHER TYPE....
TEMP............41  45  49  53  55  56  55  54  52  51  50  51
RH..............76  68  61  54  51  51  53  54  59  61  66  66
20 FT WIND DIR..E   NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  E
20 FT WIND SPD..7   7   6   6   6   6   6   6   6   6   6   6
20 FT WIND GUST.10  10  10  10  10  10  10  10  10  10  10  10
MIX HGT (KFT)...0.1 0.2 0.4 0.5 0.4 0.2 0.1 0.1 0.1 0.1 0.1 0.1
TRANSP WIND DIR.070 070 070 070 060 050 040 040 050 050 060 080
TRANSP WIND SPD.12  12  12  12  12  10  9   9   10  10  9   9
CHC OF PCPN (%).0   0   0   0   0   0   10  10  10  10  10  10
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
VRATE KT-FT/10001   2   4   5   4   2   1   1   1   1   1   1

$$
Forecaster...IZZI
Requested by...Joe James
Type of request...PRESCRIBED
.TAG 1807362.0/LOT


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