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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 231 AM EDT Wed May 21 2025 VAZ020-220800- RAWS 441801 37.99N 79.76W Elev. 2160 ft 231 AM EDT Wed May 21 2025 Date 05/20/25 Wed 05/21/25 Thu 05/22/25 Fri 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 57 70 55 67 49 TEMP 58 59 63 68 69 62 58 56 55 56 64 67 64 56 53 51 49 51 DEWPT 55 55 57 58 55 52 50 48 46 47 45 44 42 42 42 41 40 41 MIN/MAX RH 94 63 74 43 73 RH 90 87 81 70 61 70 75 74 72 72 50 43 45 59 66 68 71 68 WIND DIR SE SE SE S W W W W W W W W W W W W W W WIND SPD 2 3 3 3 4 3 3 4 4 5 5 6 5 4 4 4 4 5 WIND GUST 14 18 19 19 18 17 14 14 16 17 CLOUDS OV OV OV B2 B2 SC SC SC SC SC SC SC SC SC SC SC SC SC CLOUDS(%) 99 90 88 77 73 26 33 32 38 33 44 50 48 42 44 49 50 43 VSBY 2 3 4 7 7 9 3 10 7 10 10 10 10 10 POP 12HR 90 60 30 40 30 RAIN SHWRS EC NM NM SC SC SC SC SC SC SC SC SC SC SC SC IS IS TSTMS IS IS IS IS IS IS Obvis PF MIX HGT <1 <1 1 3 3 1 <1 1 2 3 5 6 5 2 T WIND DIR SE SE SE W SW W W W W W W W W NW T WIND SPD 5 8 5 2 9 16 19 25 9 31 41 33 27 8 DISPERSION VP VP VP VP VP VP VP VP VP ADI 3 8 8 8 31 7 9 11 4126200200187 5 MAX LVORI 6 5 4 3 1 3 3 3 3 3 1 1 1 3 STABILITY F B B B C G G F F A A B A E CEILING 300 300 300 None None None None None STA PRES 27.63 27.59 27.58 27.63 27.63 27.66 27.63 Date 05/23Sat 05/24/25Sun 05/25/25Mon 05/26/25Tue 05/27/25 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 62 47 67 47 65 54 70 57 68 TEMP 62 54 49 50 67 58 48 51 64 61 56 57 70 63 58 59 68 62 DEWPT 36 35 36 38 37 38 38 42 45 47 47 49 51 51 51 53 53 51 RH 38 48 61 63 33 47 68 71 50 60 72 75 51 65 77 80 59 67 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC FW SC FW SC SC SC B1 B1 B2 B2 B1 B1 B2 B2 B2 B1 POP 12HR 10 5 5 10 40 40 50 60 60 RAIN SHWRS SC SC SC SC SC SC NM NM SC NM TSTMS 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 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