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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 801 AM EDT Sat Sep 13 2025 NCZ001-132000- RAWS 310142 36.40N 81.46W Elev. 4608 ft 801 AM EDT Sat Sep 13 2025 Date Sat 09/13/25 Sun 09/14/25 Mon 09/15/25 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 MAX/MIN TEMP 69 51 70 54 69 TEMP 62 67 68 62 58 55 54 54 63 67 65 60 58 57 55 55 62 65 64 59 DEWPT 48 49 50 51 51 50 49 50 52 50 52 53 53 52 51 51 53 54 55 53 MAX/MIN RH 53 88 55 87 67 RH 60 52 52 67 77 83 83 86 67 54 63 78 83 83 86 86 72 68 73 80 WIND DIR NE NE NE S S W NW NW N NE NE NE NE E NE NE E SE E E WIND SPD 3 5 4 2 3 3 4 5 4 5 4 2 3 3 4 5 5 8 6 5 CLOUDS CL FW SC FW FW FW FW FW SC B1 B1 SC SC FW SC SC SC B1 B1 SC CLOUDS(%) 4 14 30 23 18 18 23 22 35 61 59 43 26 25 38 46 41 65 57 49 VSBY 10 10 10 10 10 10 6 7 10 10 10 10 10 10 10 10 10 10 10 10 POP 12HR 0 0 5 0 10 MIX HGT 3 6 5 <1 <1 <1 <1 <1 4 5 2 <1 <1 <1 <1 <1 3 5 4 <1 T WIND DIR E NE E S SW W NW NW N NE N W N N N N E E E SE T WIND SPD 1 6 3 2 1 2 3 3 8 3 2 2 3 2 1 1 8 3 2 3 DISPERSION VP VP VP VP VP VP VP VP PR ADI 4 44 19 1 1 1 2 4 35 10 5 1 2 1 1 1 31 11 7 2 MAX LVORI 3 1 2 3 4 5 5 6 3 2 3 4 5 5 6 6 3 3 3 5 STABILITY B B B G G G F B B D D F G G F B B D D E CEILING None None None None None None None None None None STA PRES 26.84 26.79 26.78 26.76 26.77 26.75 26.80 26.84 26.89 26.87 Date Tue 09/16/25Wed 09/17/25Thu 09/18/25Fri 09/19/25 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 MIN/MAX TEMP 54 66 54 67 54 71 56 71 TEMP 57 55 62 57 55 54 63 58 55 54 67 60 58 57 67 59 DEWPT 52 52 54 54 52 52 56 55 54 53 56 56 54 53 56 56 RH 83 90 75 90 90 93 78 90 96 96 68 87 86 86 68 90 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC FW SC SC SC POP 12HR 20 30 20 30 5 10 0 20 RAIN SHWRS IS IS SC IS IS IS SC IS TSTMS IS IS $$ This product is for planning and review purposes only and is not to be substituted for an official fire weather spot forecast. The data displayed are calculated from a 2.5 by 2.5 km digital database and only approximates weather conditions in highly varying terrain. Please relay any comments you have to the NWS via email at rnk.webmaster@noaa.gov. Below is a weather element key for this product. (Note...winds do not reflect local terrain effects.) DAY 1 THROUGH 3... MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature TEMP(F).............................Air temperature DEWPT(F)............................Dew point temperature MIN/MAX RH OR MAX/MIN RH(%).........Maximum/Minimum humdity RH(%)...............................Relative humidity WIND DIR(8 POINT COMPASS)...........Wind direction WIND SPD(MPH).......................Wind speed CLOUDS(CATEGORY)....................Cloud cover category EXAMPLE: CL = CLEAR; FW = FEW; SC = Scattered; BK = Broken; OV = Overcast CLOUDS(%)...........................Cloud cover as a percentage VSBY................................Visibility value in statute miles POP 12HR(%).........................Probability for accumulating precipitation WEATHER... TYPE... RAIN...........Rain RAIN SHWRS.....Rain showers TSTMS..........Thunderstorms DRIZZLE........Drizzle SNOW...........Snow SNOWSHWRS......Snow showers SLEET..........Sleet FRZG RAIN......Freezing rain FRZG DRZL......Freezing drizzle COVERAGE... IS.............Isolated SC.............Scattered NM.............Numerous O..............Occasional S..............Slight chance C..............Chance L..............Likely WD.............Widespread D..............Definite AR.............Areas PA.............Patchy MIX HGT(THOUSANDS OF FT AGL)........Mixing height Example: 6 = 6000 feet; 12 = 12000 feet; <1 = Less than 1000 foot t WIND DIR(8 POINT COMPASS).........Transport Wind direction T WIND SPD(MPH).....................Transport Wind speed DISPERSION(CATEGORY)................Smoke Dispersion category Values: vp =Very Poor;PR = Poor; FR = Fair; GD = Good; ADI (INDEX).........................Atmospheric Dispersion Index MAX LVORI (INDEX)...................Low Visibility Occurrence Risk Index STABILITY (CATEGORY)................Pasquill Turner Stability CEILING (FT)........................Ceiling STA PRES (INCHES MERCURY)...........Station pressure Day 4 Through 7... MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature TEMP(F).............................Air temperature DEWPT(F)............................Dew Point temperature RH(%)...............................Relative Humidity WIND SPD(MPH).......................Wind Speed Example: <15 = less than 15 MPH; 15> = 15 MPH or greater AVE CLOUDS(CATEGORY)................Average Cloud Cover Category POP 12HR(%).........................Probability for accumulating precipitation WEATHER.............................See Day 1 through 3 weather descriptions