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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 431 PM EDT Fri Aug 16 2024 VAZ018-170800- RAWS 444002 37.56N 80.18W Elev. 2702 ft 431 PM EDT Fri Aug 16 2024 Date 08/16/24 Sat 08/17/24 Sun 08/18/24 Mon 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 67 87 66 83 64 TEMP 76 71 70 69 69 69 80 85 86 76 73 71 69 69 76 81 82 76 70 68 67 67 DEWPT 68 69 68 66 65 66 67 64 61 63 63 64 64 65 69 68 67 65 63 63 62 62 MIN/MAX RH 93 43 92 61 91 RH 76 93 93 90 87 90 65 50 43 64 71 79 84 87 79 65 61 69 78 84 84 84 WIND DIR S S SW SW W W W W W W W W W W W W W W W W W W WIND SPD 6 5 6 5 5 6 6 6 6 6 2 3 3 3 4 5 5 4 4 4 5 6 WIND GUST 12 13 14 13 14 16 14 17 17 19 21 CLOUDS OV OV B2 B2 B2 B1 SC FW SC SC SC SC SC SC SC SC SC SC SC SC B1 SC CLOUDS(%) 99 88 87 82 76 56 38 25 37 45 27 43 48 46 41 45 34 29 29 44 51 48 VSBY 10 10 5 5 4 0 10 10 10 10 9 10 10 6 9 10 10 10 9 POP 12HR 40 20 40 60 40 RAIN SHWRS NM SC SC SC SC IS SC SC SC SC SC SC SC SC SC IS IS SC TSTMS SC IS IS IS SC SC SC SC SC SC SC SC SC IS LAL 3 2 2 1 1 1 1 1 2 3 3 3 3 3 3 3 3 HAINES 3 3 3 3 3 3 4 4 5 5 5 5 5 5 4 4 3 3 MIX HGT 3 <1 <1 <1 <1 <1 3 6 6 <1 <1 <1 <1 <1 3 5 3 1 T WIND DIR S S S SW SW SW W W NW S S SW W W W W NW NW T WIND SPD 10 6 4 3 4 5 18 11 10 3 3 4 10 4 18 12 13 10 DISPERSION PR PR PR PR PR VP VP VP VP VP VP PR ADI 30 5 3 2 3 4 70 77 70 2 2 2 5 4 70 73 57 5 MAX LVORI 3 6 6 6 6 6 1 1 1 3 3 4 5 5 3 1 1 3 STABILITY C E E E E C B B B E G F F A A A A F CEILING 3800 6400 None None None None None None None STA PRES 27.77 27.73 27.73 27.68 27.66 27.64 27.62 27.60 Date 08/19Tue 08/20/24Wed 08/21/24Thu 08/22/24Fri 08/23/24 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 79 59 78 54 79 56 79 58 80 TEMP 77 71 63 62 75 68 59 58 75 70 61 60 75 71 62 62 77 72 DEWPT 66 61 57 55 57 54 51 52 56 56 53 55 60 58 56 57 62 61 RH 69 71 81 78 54 61 75 80 52 61 75 84 60 63 81 84 60 68 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC SC FW FW FW FW FW FW SC SC SC SC SC SC SC POP 12HR 60 20 10 0 5 5 10 10 10 RAIN SHWRS SC NM IS TSTMS NM $$ 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