Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 731 PM EST Sat Dec 21 2024 NCZ018-220900- RAWS 311941 36.22N 81.63W Elev. 3254 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 35 18 37 24 TEMP 20 16 15 14 24 33 32 23 21 20 19 19 29 36 34 26 24 25 28 30 DEWPT 12 12 10 8 7 7 10 12 13 12 12 12 14 16 17 17 17 16 17 19 MIN/MAX RH 83 33 78 43 73 RH 71 84 80 76 47 33 39 62 71 71 74 74 53 43 49 68 74 68 63 63 WIND DIR NW NW NW NW W W S S SE SE S S S S S S SW W NW NW WIND SPD 8 5 4 3 2 3 3 1 1 1 1 1 2 5 4 1 1 2 2 4 CLOUDS FW FW FW CL CL CL CL FW FW FW CL CL CL CL CL CL CL CL FW FW CLOUDS(%) 19 12 6 3 3 2 1 17 7 6 2 2 2 4 0 2 4 5 15 25 VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 POP 12HR 0 0 0 0 5 SNOWSHWRS LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 4 4 4 4 3 3 3 3 3 3 3 3 3 3 3 4 MIX HGT 1 <1 <1 <1 1 3 2 <1 <1 <1 <1 <1 1 1 1 <1 T WIND DIR NW NW N NW NW NW W SE S S S S S S S S T WIND SPD 11 8 4 4 3 6 2 1 2 4 3 2 4 5 6 3 DISPERSION PR PR VP VP VP VP VP VP VP VP VP ADI 5 4 2 5 6 22 5 1 1 2 2 2 6 11 10 2 MAX LVORI 4 5 5 4 2 2 2 3 3 3 4 4 2 2 2 3 STABILITY F G G 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 27.00 27.03 27.08 27.08 27.14 27.16 27.17 27.13 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 48 31 46 33 47 36 45 39 50 TEMP 48 36 33 31 46 37 35 33 45 41 37 36 43 41 39 39 47 46 DEWPT 29 30 30 29 36 34 34 33 39 37 36 35 39 37 36 36 40 39 RH 47 79 89 92 68 89 96100 79 85 96 96 86 85 89 89 76 76 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC B1 B1 B2 B1 B1 SC B1 B2 B2 B2 B2 B1 B1 B1 POP 12HR 5 10 20 30 20 40 50 60 40 RAIN SHWRS IS IS SC IS IS IS SC SC SC SC NM 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