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Product Timestamp: 2025-05-07 09:26 UTC

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FWSBIS

Spot Forecast for G-12...USFWS
National Weather Service Bismarck ND
426 AM CDT Wed May 7 2025

Forecast is based on ignition time of 0900 CDT on May 07. 
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

There should be plenty of sunshine at the burn site today with a 
forecast high around 68. Winds will generally be out of the east 
in the 8 to 10 mph range and humidity will dip down to around 27 
percent in the afternoon. For tonight, expect lows in the upper 40s 
and humidity recovering to around 74 percent. Expect breezier 
and warmer conditions on Thursday with humidity expected to dip 
down to around 29 percent in the afternoon. 

.REST OF TODAY...

Sky/weather.........Sunny. 
CWR.................0 percent. 
Chance of pcpn......0 percent. 
Chance of thunder...0 percent. 
Max temperature.....Around 68. 
Min humidity........27 percent. 
Wind (20 ft)........East winds 8 to 10 mph. 
Mixing height.......4900 ft AGL. 
Transport winds.....East 10 to 13 mph. 
Smoke dispersal.....Poor (12600 knot-ft) early in the morning 
                    increasing to fair (49200 knot-ft) in the 
                    afternoon. 

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 
Sky (%).........18  16  11  9   12  4   3   3   3   
Weather cov.....                                    
Weather type....                                    
Tstm cov........                                    
CWR.............0   0   0   0   0   0   0   0   0   
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   
Chc of thdr (%).0   0   0   0   0   0   0   0   0   
Temp............48  52  57  60  63  65  66  68  68  
RH..............51  44  38  33  30  28  28  27  27  
20 FT wind dir..E   E   E   E   E   E   E   E   E   
20 FT wind spd..8   8   8   9   9   9   10  10  10   
20 FT wind gust.12  12  12  13  13  14  14  14  14  
Mix hgt (kft)...1.1 1.3 2.0 2.9 3.8 4.4 4.7 4.8 4.9 
Transp wind dir.E   E   E   NE  NE  NE  E   E   E   
Transp wind spd.13  12  10  10  10  10  12  12  12  
Dispr kt-ft/1K..13  13  18  27  35  40  47  48  49  

.TONIGHT...

Sky/weather.........Mostly clear. 
CWR.................0 percent. 
Chance of pcpn......0 percent. 
Chance of thunder...0 percent. 
Min temperature.....Around 47. 
Max humidity........74 percent. 
Wind (20 ft)........Southeast winds 8 to 10 mph. 
Mixing height.......400 ft AGL. 
Transport winds.....Southeast 10 to 15 mph. 
Smoke dispersal.....Fair (42100 knot-ft) early in the evening 
                    decreasing to poor (3800 knot-ft) late in the 
                    night. 

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM   
Sky (%).........2      10     11     11     11     8      
Weather cov.....                                          
Weather type....NONE   NONE   NONE   NONE   NONE   NONE   
Tstm cov........                                          
CWR.............0      0      0      0      0      0      
Chc of pcpn (%).0      0      0      0      0      0      
Chc of thdr (%).0      0      0      0      0      0      
Temp............68     63     56     52     50     49     
RH..............28     39     53     61     66     68     
20 ft wind......SE 9   SE 9   SE 8   SE 9   SE 9   SE 9   
20 ft wind gust.13     12     13     13     14     14     
Mix hgt (ft)....4700   700    400    400    400    500    
Transport wind..SE 10  SE 10  SE 10  SE 13  S 13   S 15   
Dispr kt-ft/1K..42     6      4      5      5      6      

.THURSDAY...

Sky/weather.........Sunny. 
CWR.................0 percent. 
Chance of pcpn......0 percent. 
Chance of thunder...0 percent. 
Max temperature.....Around 79. 
Min humidity........29 percent. 
Wind (20 ft)........South winds 10 to 18 mph. Gusts up to 29 mph. 
Mixing height.......7000 ft AGL. 
Transport winds.....South 14 to 23 mph increasing to around 24 mph 
                    late in the afternoon. 
Smoke dispersal.....Poor (6400 knot-ft) early in the morning 
                    increasing to good (93500 knot-ft) in the 
                    afternoon increasing to very good (110900 
                    knot-ft) late in the afternoon. 

TIME (CDT)      6 AM         10 AM        2 PM         
Sky (%).........6            3            12           
Weather cov.....                                       
Weather type....NONE         NONE         NONE         
Tstm cov........                                       
CWR.............0            0            0            
Chc of pcpn (%).0            0            0            
Chc of thdr (%).0            0            0            
Temp............48           63           77           
RH..............71           56           33           
20 FT wind......S 10G15      S 14G20      S 18G24      
Mix hgt (ft)....500          1500         5800         
Transport wind..S 14         S 18         S 22         
Dispr kt-ft/1K..6            23           111          

$$
Forecaster...HARGROVE
Requested by...D. Mireles
Type of request...PRESCRIBED
.TAG 2513311.0/BIS
.DELDT 05/07/25
.FormatterVersion 2.0.0
.EMAIL Dustin_mireles@fws.gov