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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 131 AM EDT Fri Apr 25 2025 NCZ018-260800- RAWS 311941 36.22N 81.63W Elev. 3254 ft 131 AM EDT Fri Apr 25 2025 Date 04/24/25 Fri 04/25/25 Sat 04/26/25 Sun UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 MIN/MAX TEMP 55 63 55 69 45 TEMP 57 56 56 60 62 63 60 58 56 57 58 64 67 67 62 56 52 48 46 DEWPT 54 54 54 55 56 56 56 54 54 53 55 56 55 55 53 50 47 43 40 MIN/MAX RH 94 77 93 66 85 RH 90 93 93 84 81 78 87 86 93 86 90 75 65 65 72 80 83 83 79 WIND DIR SE SE S S S S SW SW W W W W W NW NW NW NW NW NW WIND SPD 2 1 2 4 6 6 4 2 2 2 5 8 10 10 5 5 5 4 5 WIND GUST 12 16 18 18 17 16 14 CLOUDS B2 OV OV OV OV OV B2 B2 B1 B2 B1 B1 B1 B1 B1 SC SC SC SC CLOUDS(%) 86 99 98 99 98 95 81 72 65 76 67 65 65 60 52 40 32 40 27 VSBY 2 2 1 7 9 9 7 6 8 7 6 6 6 10 10 10 10 10 10 POP 12HR 50 70 70 60 10 RAIN C C C RAIN SHWRS SC NM NM NM NM NM SC NM NM SC TSTMS IS IS IS SC SC IS Obvis F F PF MIX HGT <1 <1 <1 1 2 2 <1 <1 <1 <1 1 2 3 3 1 T WIND DIR S S S SW SW S S SW SW SW NW NW NW NW NW T WIND SPD 12 6 14 13 11 16 12 10 9 4 16 23 19 21 21 DISPERSION VP VP VP VP VP VP PR PR PR VP ADI 6 3 16 19 24 34 8 5 4 2 23 62 65 66 15 MAX LVORI 6 8 5 4 3 3 5 6 6 6 4 3 1 1 3 STABILITY F F B C C C E F F F C C C C E CEILING 300 300 200 200 100 100 500 None STA PRES 27.05 27.05 26.98 26.95 26.90 26.92 26.93 Date 04/27Mon 04/28/25Tue 04/29/25Wed 04/30/25Thu 05/01/25 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 MAX/MIN TEMP 67 45 70 50 75 57 75 57 73 TEMP 65 59 48 49 67 62 53 55 71 67 60 60 74 65 59 59 71 64 DEWPT 34 39 38 39 44 45 46 50 54 56 55 55 55 55 54 54 55 55 RH 31 47 68 68 43 54 77 83 55 68 84 84 51 70 83 83 57 73 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS FW FW FW FW FW FW FW FW SC B1 SC B1 B1 B1 B1 B1 B1 B1 POP 12HR 0 0 0 0 20 10 40 30 60 RAIN SHWRS IS IS NM SC IS SC NM TSTMS SC IS 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 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