Spot Forecast
Issued by NWS North Platte, NE

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Spot Forecast for WTREX Niobrara...The Nature Conservancy
National Weather Service North Platte NE
549 PM CDT Tue Apr 23 2024

Forecast is based on ignition time of 0800 CDT on April 24.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact the NWS North Platte office at 308-532-0921 (or
at 1-800-603-3562) if you have any questions or concerns with this forecast.

.DISCUSSION...
There will be a good amount of cloudiness around tomorrow and this will
limit mixing a bit. However the low level wind field will be increasing
and gusty conditions are expected to develop during the afternoon. There
is uncertainty in precise timing of onset for the highest gusts but expect
the window between 1PM and 5PM will see gusts around 30mph with approximately
30 percent chance for gusts to 35mph. Winds are expected to diminish a bit
heading into Wednesday evening but a resurgence in gusts will occur overnight
as the low level wind field continues to increase.

Minimum humidity Wednesday afternoon will be around 28 percent and temperatures
will peak in the upper 60s to around 70. There may be some isolated showers
especially earlier on Wednesday but the probability for wetting rainfall is
low.


.WEDNESDAY...

Sky/weather.........Partly sunny.
Max temperature.....Around 68.
Min humidity........31 percent.
Wind (20 ft)........South winds 7 to 15 mph increasing to 17 to 22
                    mph in the afternoon.
Eye level winds.....South winds 6 to 13 mph increasing to around 13
                    mph late in the afternoon.
LAL.................1.
Mixing height.......4600 ft AGL.
Transport winds.....South 17 to 24 mph.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........58  63  69  72  75  78  72  66  59  56
Weather cov.....
Weather type....
Tstm cov........
LAL.............1   1   1   1   1   1   1   1   1   1
Temp............41  46  52  56  58  60  63  66  68  68
RH..............67  60  50  42  40  37  34  30  28  31
20 FT wind dir..S   S   S   S   S   S   S   S   S   S
20 FT wind spd..7   10  12  14  15  17  18  21  21  22
20 FT wind gust.12  16  18  20  21  25  30  32  30  28
Eye lvl wnd dir.S   S   S   S   S   S   S   S   S   S
Eye lvl wnd spd.4   6   7   8   9   10  11  13  13  13
Eye lvl wnd gst.7   10  11  12  13  14  14  16  16  15
Mix hgt (kft)...0.8 1.1 1.4 2.0 2.6 3.2 3.7 4.1 4.6 4.2
Transp wind dir.S   S   S   S   S   S   S   S   S   S
Transp wind spd.17  20  21  22  23  24  24  24  24  24
Haines index....4   4   4   4   4   5   5   5   5   5

.WEDNESDAY NIGHT...

Sky/weather.........Mostly cloudy then becoming partly cloudy then
                    becoming mostly cloudy then becoming partly
                    cloudy. Slight chance of showers overnight.
Min temperature.....Around 44.
Max humidity........88 percent.
Wind (20 ft)........Southeast winds 13 to 21 mph.
Eye level winds.....Southeast winds 8 to 13 mph.
LAL.................1.
Mixing height.......700 ft AGL.
Transport winds.....South 16 to 25 mph.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........52  48  54  60  66  61  56  51  49  47  46  49
Weather cov.....                            SCH SCH SCH SCH SCH
Weather type....                            RW  RW  RW  RW  RW
Tstm cov........
LAL.............1   1   1   1   1   1   1   1   1   1   2   2
Temp............67  65  62  59  56  53  52  50  49  48  46  45
RH..............33  35  39  44  49  54  54  61  64  67  73  79
20 FT wind dir..S   S   S   SE  SE  SE  SE  SE  SE  S   S   S
20 FT wind spd..24  17  15  14  14  17  17  16  15  14  13  13
20 FT wind gust.24  22  22  22  22  26  26  23  21  20  18  18
Eye lvl wnd dir.S   S   S   SE  SE  SE  SE  SE  SE  S   S   S
Eye lvl wnd spd.13  10  9   8   8   10  10  10  9   8   8   8
Eye lvl wnd gst.14  13  13  13  13  16  16  14  13  12  11  11
Mix hgt (kft)...3.8 3.3 2.5 1.7 0.8 0.8 0.8 0.8 0.8 0.8 0.7 0.7
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.25  25  24  23  22  21  21  20  18  18  17  16
Haines index....5   5   5   5   5   5   5   4   4   4   4   4

.THURSDAY...

Sky/weather.........Mostly cloudy. Slight chance of showers early
                    in the morning, then chance of showers.
Max temperature.....Around 67.
Min humidity........57 percent.
Wind (20 ft)........South winds 13 to 22 mph shifting to the
                    southeast 22 to 23 mph late in the afternoon.
Eye level winds.....South winds 8 to 14 mph.
LAL.................1.
Mixing height.......3100 ft AGL.
Transport winds.....South 16 to 25 mph increasing to 26 to 28 mph
                    late in the morning.
Haines Index........2 to 4 or very low to low potential for large
                    plume dominated fire growth.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........53  56  56  57  57  64  72  79  80  81  82  86
Weather cov.....SCH CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........
LAL.............2   2   2   2   1   1   1   1   1   1   2   2
Temp............44  45  49  54  56  59  62  63  65  65  65  65
RH..............85  88  81  74  66  61  59  57  57  57  57  58
20 FT wind dir..S   S   S   S   S   S   S   S   S   SE  SE  SE
20 FT wind spd..13  13  15  17  18  20  21  22  23  23  23  22
20 FT wind gust.18  18  22  24  26  28  29  30  31  32  33  32
Eye lvl wnd dir.S   S   S   S   S   S   S   S   S   SE  SE  SE
Eye lvl wnd spd.8   8   9   10  11  12  13  13  14  14  14  13
Eye lvl wnd gst.11  11  13  14  16  17  17  18  19  19  20  19
Mix hgt (kft)...0.7 0.7 1.2 1.7 2.2 2.5 2.8 3.1 3.0 3.0 2.9 2.7
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.16  17  20  23  25  26  26  26  28  28  28  26
Haines index....4   3   3   3   3   3   3   2   2   2   2   2

$$
Forecaster...Sporer
Requested by...Lyndsey Lascheck
Type of request...PRESCRIBED
.TAG 2412021.1/LBF
.DELDT 04/23/24
.FormatterVersion 2.0.0
.EMAIL Lyndsey.lascheck@tnc.org
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