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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 731 PM EST Sat Dec 21 2024 NCZ001-220900- RAWS 310141 36.40N 81.29W Elev. 3009 ft 731 PM EST Sat Dec 21 2024 Date 12/21/24 Sun 12/22/24 Mon 12/23/24 Tue UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 EST 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 MIN/MAX TEMP 14 34 17 35 23 TEMP 20 17 15 14 23 32 32 25 21 19 18 18 28 35 34 27 24 23 25 29 DEWPT 12 12 10 9 9 6 10 11 12 12 12 12 15 16 18 17 18 17 17 19 MIN/MAX RH 83 33 81 45 77 RH 71 80 80 80 54 33 39 55 68 74 77 77 58 45 51 65 77 77 71 66 WIND DIR N N N N N S SE S S S S S S S S S SW W W NW WIND SPD 8 6 4 4 3 2 4 2 3 2 1 1 2 5 5 2 2 2 3 5 WIND GUST 18 CLOUDS SC FW CL CL CL CL CL FW CL CL CL CL CL FW CL CL CL CL FW SC CLOUDS(%) 26 10 5 5 2 4 0 21 5 4 4 3 3 7 1 3 4 5 21 30 VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 POP 12HR 0 0 0 0 5 LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 MIX HGT 1 1 <1 <1 1 2 2 <1 <1 <1 <1 <1 <1 2 1 <1 T WIND DIR N N N NW NW NW W SE S S S S S S S S T WIND SPD 14 12 6 5 4 5 1 2 3 4 5 4 5 6 6 4 DISPERSION PR PR VP VP VP VP VP VP VP VP VP ADI 7 6 3 6 8 18 3 1 2 2 3 5 7 13 11 2 MAX LVORI 4 4 5 4 2 2 2 3 3 3 5 4 3 2 2 3 STABILITY F F F B B B B G G G G B B C C G CEILING None None None None None None None None None STA PRES 27.36 27.39 27.44 27.44 27.50 27.52 27.53 27.48 Date 12/24Wed 12/25/24Thu 12/26/24Fri 12/27/24Sat 12/28/24 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 EST 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 MAX/MIN TEMP 48 30 44 32 46 35 44 38 48 TEMP 48 37 33 31 44 38 35 32 44 40 36 35 42 41 38 38 47 45 DEWPT 30 31 30 31 36 34 34 32 39 37 36 35 39 37 36 36 40 39 RH 49 79 89100 73 85 96100 82 89100100 89 85 92 92 76 79 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC B1 B1 B1 B2 B2 B1 SC B1 B2 B2 B2 B2 B2 B2 B2 POP 12HR 5 5 20 30 20 30 50 50 40 RAIN SHWRS IS IS SC IS IS SC SC SC SC SC SC SC SNOWSHWRS SC 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 LAL(CATEGORY).......................Lightning Activity Level HAINES(CATEGORY)....................Haines Index 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