701
FNUS73 KLOT 261917
FWSLOT

Spot Forecast for Field Station Pile Burn...National Park Service
National Weather Service Chicago IL
217 PM CDT Wed Jun 26 2024

Forecast is based on ignition time of 0900 CDT on June 27.
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...

High pressure centered over Lake Michigan will result in mostly
sunny, quiet and cooler conditions, with northerly winds on
Thursday. Minimum RH will bottom out in the 50-55% range with
2-3kft AGL mixing heights. The strongest northerly winds will be
during the morning, easing in the afternoon. A chance for showers
will return on Friday.

.THURSDAY...

Sky/weather.........Mostly sunny.
Temperature.........66 at ignition...Max 70.
RH..................68 percent at ignition...Min 53 percent.
Wind (20 ft)........Winds north at 16 mph at ignition...otherwise
                    North winds 12 to 15 mph decreasing to around
                    10 mph late in the afternoon.
Chance of pcpn......0 percent.
LAL.................No Tstms.
Transport winds.....North 14 to 17 mph.
Mixing height.......2200 ft AGL at ignition...otherwise 2700 ft
                    AGL.
Smoke dispersal.....Good /32500 knot-ft/ at ignition. Max...good
                    /32500 knot-ft/.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........6   6   7   7   7   11  15  19  25
Weather cov.....
Weather type....
Temp............66  67  68  69  69  70  70  69  69
RH..............68  65  61  57  55  53  53  55  55
20 FT wind dir..020 020 020 020 020 020 010 010 010
20 FT wind spd..16  16  16  15  14  13  13  12  12
20 FT wind gust.24  24  23  21  20  18  18  18  18
Mix hgt (kft)...2.2 2.3 2.5 2.7 2.6 1.9 1.8 1.6 1.5
Transp wind dir.030 030 030 020 020 010 010 010 020
Transp wind spd.17  16  16  15  14  14  14  14  14
Chc of pcpn (%).0   0   0   0   0   0   0   0   0
LAL.............1   1   1   1   1   1   1   1   1
Vrate kt-ft/1K..33  31  33  32  31  23  22  20  18

.THURSDAY NIGHT...

Sky/weather.........Partly cloudy.
Temperature.........Min 59.
RH..................Max 83 percent.
Wind (20 ft)........Northeast winds 6 to 9 mph shifting to the
                    southeast around 6 mph early in the morning.
Chance of pcpn......0 percent.
LAL.................No Tstms.
Transport winds.....Northeast 10 to 13 mph shifting to the
                    southeast 10 to 15 mph overnight.
Mixing height.......400 ft AGL.
Smoke dispersal.....Fair (16000 knot-ft) early in the evening
                    decreasing to poor (4000 knot-ft) late in the
                    night.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........32  38  38  39  40  45  50  56  57  57  57  56
Weather cov.....
Weather type....
Temp............67  67  64  63  62  61  60  60  59  59  60  61
RH..............59  59  67  72  75  78  81  81  83  80  78  75
20 FT wind dir..010 020 030 040 050 070 080 080 100 110 120 130
20 FT wind spd..10  10  9   8   7   6   6   6   6   7   7   7
20 FT wind gust.17  16  13  9                       8       9
Mix hgt (kft)...1.4 1.3 1.0 0.8 0.5 0.5 0.5 0.4 0.4 0.5 0.5 0.5
Transp wind dir.020 020 030 050 050 060 090 100 110 120 130 130
Transp wind spd.13  13  12  12  10  10  10  10  12  13  14  15
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/1K..16  14  11  8   5   4   4   4   4   5   6   6

.FRIDAY...

Sky/weather.........Partly cloudy then becoming mostly cloudy.
                    Chance of showers in the afternoon.
Temperature.........Max 81.
RH..................Min 56 percent.
Wind (20 ft)........Southeast winds 7 to 9 mph.
Chance of pcpn......40 percent.
LAL.................No Tstms.
Transport winds.....South 13 to 17 mph.
Mixing height.......3400 ft AGL.
Smoke dispersal.....Poor (3900 knot-ft) early in the morning
                    increasing to good (50500 knot-ft) in the
                    afternoon.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........56  55  54  51  49  53  57  61  69  77  85  87
Weather cov.....                            CHC CHC CHC CHC CHC
Weather type....                            RW  RW  RW  RW  RW
Temp............62  65  68  70  72  75  78  80  81  81  80  80
RH..............75  70  68  66  64  60  56  57  57  57  60  61
20 FT wind dir..140 140 140 150 150 150 160 170 170 170 170 170
20 FT wind spd..8   9   9   10  10  10  10  10  10  10  10  9
20 FT wind gust.12  15  15  16  16  16  17  17  17  17  17  17
Mix hgt (kft)...0.5 0.6 1.1 1.6 2.0 2.7 3.3 3.4 2.6 1.5 0.6 0.3
Transp wind dir.140 160 160 170 170 170 180 180 180 180 180 180
Transp wind spd.16  17  17  17  17  17  17  17  16  14  13  14
Chc of pcpn (%).0   10  10  10  10  10  10  40  40  40  40  40
LAL.............1   1   1   1   1   1   1   1   1   1   1   1
Vrate kt-ft/1K..7   8   16  23  31  41  49  51  37  18  6   4

$$
Forecaster...Castro
Requested by...Christian Pichay
Type of request...PRESCRIBED
.TAG 2416747.0/LOT
.DELDT 06/26/24
.FormatterVersion 2.0.0