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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 731 PM EST Sat Dec 21 2024 VAZ020-220900- RAWS 441801 37.99N 79.76W Elev. 2160 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 18 33 20 37 28 TEMP 22 22 21 18 22 31 31 25 24 23 21 20 27 36 35 29 28 28 28 31 DEWPT 8 8 8 7 7 5 4 6 7 7 8 9 11 12 13 14 14 16 18 21 MIN/MAX RH 64 30 62 35 66 RH 54 54 56 61 52 32 31 44 47 50 56 62 50 36 40 53 55 60 66 66 WIND DIR NW NW NW NW NW SW S S S S S S S S S S SW W W W WIND SPD 6 5 4 3 3 2 3 1 1 2 1 1 2 2 2 2 2 2 2 2 CLOUDS B1 SC FW FW CL CL CL FW FW FW CL CL CL FW CL FW FW SC SC B1 CLOUDS(%) 60 41 17 8 5 3 0 9 8 9 4 3 4 11 2 10 13 32 50 68 VSBY 10 10 10 10 10 10 10 10 8 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 3 3 4 4 4 4 4 4 4 4 MIX HGT 2 2 2 <1 2 3 2 <1 <1 <1 <1 <1 1 2 2 <1 T WIND DIR NW NW NW NW NW W W SE SE SE S S S S S S T WIND SPD 14 11 9 6 3 2 2 2 2 2 3 2 6 6 9 8 DISPERSION PR PR VP VP VP VP VP VP VP VP VP ADI 7 5 4 7 8 8 7 1 1 1 2 2 12 16 18 4 MAX LVORI 2 2 3 3 2 2 2 2 2 2 3 3 2 2 2 2 STABILITY F G G B B B B G G G G B B B B G CEILING None None None None None None None None None STA PRES 28.03 28.07 28.13 28.13 28.18 28.20 28.20 28.13 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 46 31 45 33 47 35 47 39 49 TEMP 46 38 34 31 44 38 35 33 47 40 38 36 47 41 41 39 49 44 DEWPT 31 29 29 29 33 30 29 31 34 32 32 33 36 33 33 33 37 35 RH 55 70 82 92 65 73 78 92 60 73 79 89 65 73 73 79 63 70 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B1 SC SC B1 B1 B1 B2 B1 B1 SC B1 B1 B2 B2 B2 B2 B2 B1 POP 12HR 0 5 10 20 10 20 40 40 30 RAIN SHWRS IS IS SC SC SC SC SC SC SNOWSHWRS 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