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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 731 PM EST Sat Dec 21 2024 NCZ019-220900- RAWS 312001 36.23N 81.32W Elev. 2380 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 19 36 21 39 27 TEMP 25 22 20 19 27 35 35 27 25 24 22 22 29 37 38 31 27 27 28 30 DEWPT 13 12 10 10 11 10 11 12 13 12 12 13 15 16 17 17 17 17 17 20 MIN/MAX RH 68 34 68 41 66 RH 60 65 64 67 50 35 36 53 60 60 65 68 55 42 42 56 65 65 63 66 WIND DIR N N N N NE SE SE E N E NW W S S S SW W W NW NW WIND SPD 4 3 2 2 2 2 3 1 0 1 1 1 2 3 2 1 1 2 2 2 CLOUDS CL CL CL CL CL FW CL FW CL FW CL CL CL CL CL CL CL FW FW SC CLOUDS(%) 5 4 3 4 3 7 0 19 4 9 4 3 3 4 1 3 2 7 16 27 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 2 3 3 <1 <1 <1 <1 <1 2 3 2 <1 T WIND DIR N N N N NW NW S SE SE SE SE S S S S SW T WIND SPD 12 9 4 2 2 3 2 2 1 1 1 1 4 5 5 2 DISPERSION VP VP VP VP VP VP VP VP VP VP VP ADI 6 4 2 2 6 14 7 1 1 1 1 1 11 18 15 1 MAX LVORI 3 3 3 3 2 2 2 2 3 3 4 3 2 2 2 3 STABILITY G 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 28.11 28.15 28.20 28.19 28.26 28.28 28.29 28.24 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 52 33 48 35 49 38 48 41 52 TEMP 52 40 36 33 47 41 37 35 47 43 39 39 46 43 41 41 49 47 DEWPT 31 31 30 31 36 36 35 35 39 38 37 37 39 37 37 37 40 40 RH 44 70 79 92 65 82 92100 74 82 92 92 76 79 85 85 71 76 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC B1 B1 B2 B1 B1 SC B2 B2 B2 B2 B2 B2 B2 B2 POP 12HR 5 5 20 30 20 30 40 50 40 RAIN SHWRS IS IS SC IS IS SC SC SC SC SC SC SC $$ 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