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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 731 PM EST Sat Dec 21 2024 WVZ043-220900- RAWS 465401 37.53N 81.00W Elev. 2725 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 16 30 19 39 26 TEMP 20 18 16 16 19 27 30 24 21 21 19 19 25 36 39 32 27 27 28 30 DEWPT 12 12 11 11 11 9 9 9 10 10 11 12 13 16 18 19 19 20 22 24 MIN/MAX RH 83 41 75 41 79 RH 71 77 80 80 70 46 41 52 62 62 70 74 60 43 42 58 71 74 78 78 WIND DIR NW NW NW NW N NW NE E SE SE SE SE SE SE SE S S SW W W WIND SPD 5 4 3 3 3 2 2 1 2 3 2 2 3 4 4 3 2 2 2 3 CLOUDS B2 SC SC SC FW FW CL FW CL FW CL CL FW FW CL FW FW SC B1 B1 CLOUDS(%) 74 48 37 34 24 13 4 10 5 6 4 2 6 13 5 11 11 35 53 66 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 3 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 MIX HGT 2 2 2 1 2 3 2 <1 <1 <1 <1 <1 1 2 1 <1 T WIND DIR NW NW NW NW NW NW NW N SE SE SE SE SE S S SE T WIND SPD 14 12 11 8 5 5 3 1 2 3 4 4 6 8 11 5 DISPERSION PR VP VP VP VP VP VP VP VP VP VP ADI 10 6 5 14 14 18 10 1 1 2 2 5 10 19 19 3 MAX LVORI 3 4 4 4 3 2 2 2 3 3 3 4 2 2 2 3 STABILITY E F G B B B B G G G G B B C C G CEILING 1400 None None None None None None None None STA PRES 27.86 27.88 27.94 27.93 27.97 27.97 27.97 27.91 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 41 30 45 33 46 35 47 38 50 TEMP 40 37 33 30 43 39 34 33 44 41 36 36 45 43 40 39 48 46 DEWPT 31 31 31 30 35 34 33 33 37 35 35 35 39 37 36 36 40 39 RH 70 79 92100 73 82 96100 76 79 96 96 79 79 85 89 74 76 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 POP 12HR 5 5 10 20 20 30 40 50 40 RAIN SHWRS IS IS IS IS SC SC SC SC SC SC SC SNOWSHWRS 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 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