334  
FNAK71 PAFC 120352  
FWSAER  
 
SPOT FORECAST FOR NELCHINA GLACIER FIRE...SOA DOF  
NATIONAL WEATHER SERVICE ANCHORAGE AK  
752 PM AKDT FRI JUL 11 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 2000 AKDT ON JULY 11.  
   
DISCUSSION  
 
SOUTHWEST WINDS INCREASING TO AROUND 10 TO 15 MPH IS EXPECTED  
THROUGH TAHNETA PASS TO THE BURN SITE TONIGHT WITH SHOWERS  
LINGERING SATURDAY MORNING. WINDS GENERALLY RELAX A LITTLE BIT  
DURING THE DAY SATURDAY, BUT A NARROW SWATH OF WEST-SOUTHWEST  
WINDS THROUGH TAHNETA PASS REMAINS AND COULD STAY OVER THE BURN  
AREA THROUGH SATURDAY AND SATURDAY NIGHT. THESE WINDS SHOULD  
DECREASE BY SUNDAY MORNING. SOUTHERLY WIND GUSTS OF 10 TO 15 MPH  
MAY DEVELOP SUNDAY AFTERNOON THROUGH THE NELCHINA GLACIER TERRAIN  
GAP AND PARTLY CLOUDY TO MOSTLY SUNNY SKIES EACH AFTERNOON THAT  
COULD LEAD TO A FEW STRAY SHOWERS. ISOLATED THUNDERSTORMS ARE  
POSSIBLE SATURDAY AFTERNOON. PREVAILING MOTION FOR SHOWERS LOOKS  
TO REMAIN FROM NORTHEAST TO SOUTHWEST OVER THE NEXT FEW DAYS.  
SUNDAY APPEARS TO BE THE WARMER AND SLIGHT DRIER DAY FOR THE NEXT  
FEW DAYS.  
 
   
REST OF TONIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). RAIN SHOWERS.  
CWR.................40 PERCENT.  
CHANCE OF PCPN......80 PERCENT.  
TSTM COVERAGE.......NONE.  
MIN TEMPERATURE.....AROUND 44.  
MAX HUMIDITY........94 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 12 TO 14 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....WEST AROUND 8 MPH.  
PCPN AMOUNT.........0.06 INCHES.  
SNOWFALL AMOUNT.....0.0 INCHES.  
 
TIME (AKDT) 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........73 73 75 75 75 83 83 83 89 89  
WEATHER COV.....LKY LKY LKY LKY LKY LKY LKY LKY DEF DEF  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW  
CWR.............40 40 40 40 40 40 40 40 40 40  
CHC OF PCPN (%).60 60 60 60 60 60 60 60 80 80  
TEMP............55 53 51 48 47 47 45 45 44 44  
RH..............64 71 77 86 90 89 92 92 94 93  
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW  
20 FT WIND SPD..12 12 12 12 12 14 14 14 12 12  
20 FT WIND GUST.15 15 16 16 16 17 17 17 14 14  
MIX HGT (KFT)...2.1 2.1 0.6 0.6 0.6 0.5 0.5 0.5 0.5 0.5  
TRANSP WIND DIR.W W W W W W W W W W  
TRANSP WIND SPD.8 8 8 8 8 8 8 8 8 8  
   
SATURDAY  
 
SKY/WEATHER.........CLOUDY (85-95 PERCENT) THEN BECOMING PARTLY  
SUNNY (50-60 PERCENT). RAIN SHOWERS EARLY IN  
THE MORNING, THEN CHANCE OF RAIN SHOWERS.  
SLIGHT CHANCE OF THUNDERSTORMS IN THE  
AFTERNOON.  
CWR.................40 PERCENT DECREASING TO 12 PERCENT.  
CHANCE OF PCPN......80 PERCENT.  
TSTM COVERAGE.......ISOLATED.  
MAX TEMPERATURE.....AROUND 60.  
MIN HUMIDITY........58 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 12 TO 14 MPH. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS IN THE  
AFTERNOON.  
MIXING HEIGHT.......2400 FT AGL.  
TRANSPORT WINDS.....WEST 5 TO 8 MPH.  
PCPN AMOUNT.........0.05 INCHES.  
SNOWFALL AMOUNT.....0.0 INCHES.  
 
TIME (AKDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........89 91 91 91 87 87 87 63 63 63 45 45  
WEATHER COV.....DEF 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  
CWR.............40 10 10 10 10 10 10 10 10 10 10 10  
CHC OF PCPN (%).80 50 50 50 30 30 30 30 30 30 30 30  
TEMP............44 44 45 47 48 51 53 55 57 58 60 60  
RH..............93 92 91 88 83 79 72 67 66 62 60 58  
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW  
20 FT WIND SPD..12 12 12 12 13 13 13 14 14 14 14 14  
20 FT WIND GUST.14 14 14 14 15 15 15 15 15 15 15 15  
MIX HGT (KFT)...0.5 0.7 0.7 0.7 1.4 1.4 1.4 2.0 2.0 2.0 2.4 2.4  
TRANSP WIND DIR.W W W W W W W W W W W W  
TRANSP WIND SPD.8 7 7 7 6 6 6 5 5 5 6 6  
   
SATURDAY NIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (60-70 PERCENT).  
CHANCE OF RAIN SHOWERS IN EARLY EVENING.  
SLIGHT CHANCE THUNDERSTORMS IN EARLY EVENING.  
CWR.................12 PERCENT.  
CHANCE OF PCPN......30 PERCENT.  
TSTM COVERAGE.......ISOLATED.  
MIN TEMPERATURE.....AROUND 45.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........WEST WINDS 9 TO 15 MPH. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS EARLY IN THE  
EVENING.  
MIXING HEIGHT.......400 FT AGL.  
TRANSPORT WINDS.....WEST 6 TO 10 MPH.  
PCPN AMOUNT.........0.00 INCHES.  
SNOWFALL AMOUNT.....0.0 INCHES.  
 
TIME (AKDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........45 34 34 34 33 33 33 49 49 49 66 66  
WEATHER COV.....CHC SCH SCH SCH  
WEATHER TYPE....RW RW RW RW  
CWR.............10 10 10 10 10 10 10 10 10 10 10 10  
CHC OF PCPN (%).30 20 20 20 10 10 10 10 10 10 10 10  
TEMP............60 59 57 55 53 50 48 47 46 46 45 46  
RH..............59 63 70 77 85 91 96 99 100 99 100 100  
20 FT WIND DIR..SW SW SW SW W W W W W W W W  
20 FT WIND SPD..14 15 15 15 9 9 9 12 12 12 10 10  
20 FT WIND GUST.15 16 16 16 16 16 16 16 16 16 14 14  
MIX HGT (KFT)...2.4 1.9 1.9 1.9 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4  
TRANSP WIND DIR.W W W W W W W W W W W W  
TRANSP WIND SPD.6 9 9 9 10 10 10 8 8 8 8 8  
   
SUNDAY  
 
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT). SLIGHT CHANCE OF  
RAIN SHOWERS LATE IN THE AFTERNOON.  
CWR.................10 PERCENT DECREASING TO 0 PERCENT.  
CHANCE OF PCPN......20 PERCENT.  
TSTM COVERAGE.......NONE.  
MAX TEMPERATURE.....AROUND 65.  
MIN HUMIDITY........47 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 5 TO 10 MPH SHIFTING TO THE  
SOUTH 5 TO 7 MPH IN THE AFTERNOON. GUSTS FROM  
THE SOUTH 10 TO 15 MPH IN THE AFTERNOON AND  
EVENING.  
MIXING HEIGHT.......4900 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 5 TO 8 MPH SHIFTING TO THE SOUTHEAST  
AROUND 5 MPH EARLY IN THE AFTERNOON, THEN  
SHIFTING TO THE SOUTH AROUND 6 MPH LATE IN THE  
AFTERNOON.  
PCPN AMOUNT.........0.00 INCHES.  
SNOWFALL AMOUNT.....0.0 INCHES.  
 
TIME (AKDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........66 76 76 76 51 51 51 34 34 34 40 40  
WEATHER COV..... SCH SCH  
WEATHER TYPE.... RW RW  
CWR.............10 0 0 0 0 0 0 0 0 0 0 0  
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 10 20 20  
TEMP............46 47 49 51 53 56 58 61 63 64 65 65  
RH..............98 93 89 83 77 69 62 56 51 48 46 47  
20 FT WIND DIR..W W W W SW SW SW S S S S S  
20 FT WIND SPD..10 8 8 8 5 5 5 5 5 5 7 7  
20 FT WIND GUST.14 13 13 13 7 7 7 8 8 8 9 9  
MIX HGT (KFT)...0.4 0.4 0.4 0.4 1.8 1.8 1.8 3.7 3.7 3.7 4.9 4.9  
TRANSP WIND DIR.W W W W SW SW SW SE SE SE S S  
TRANSP WIND SPD.8 6 6 6 5 5 5 5 5 5 6 6  
 
 
 
FORECASTER...RUX  
REQUESTED BY...TOBY STAPLETON  
TYPE OF REQUEST...WILDFIRE  
.TAG 2517468.4/AER  
.DELDT 07/11/25  
.FORMATTERVERSION 2.0.0  
.EMAIL DANIEL.WHITE@ALASKA.GOV,ANDY_JOHNSON@FIRENET.GOV,TOBY.STAPLETON@USDA.GOV,FIRENCOLORADO@GMAIL.COM,JERED.KEMP@ALASKA.GOV  
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