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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 431 PM EDT Fri Aug 16 2024 VAZ024-170800- RAWS 441631 37.63N 79.51W Elev. 865 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 68 90 67 88 64 TEMP 82 75 72 71 70 70 81 88 89 80 75 72 70 70 79 84 86 78 71 69 66 67 DEWPT 70 70 70 69 69 69 70 68 65 67 70 68 67 68 71 69 69 68 66 65 64 65 MIN/MAX RH 98 47 99 57 100 RH 67 84 93 93 97 97 69 52 45 65 84 87 90 93 77 61 57 71 84 87 93 93 WIND DIR S S S S S SW W W SW S S SW SW W W W W W W W W W WIND SPD 5 4 3 3 3 3 4 5 6 4 2 1 1 2 3 4 4 2 2 2 2 2 CLOUDS B2 OV OV B2 B2 B1 SC SC SC SC SC SC B1 B1 SC SC SC FW FW FW SC SC CLOUDS(%) 84 91 88 74 81 53 42 39 45 27 33 37 58 52 30 33 28 20 22 17 30 32 VSBY 10 10 9 6 4 2 10 10 10 10 9 10 8 10 9 10 10 10 9 POP 12HR 50 20 30 50 30 RAIN SHWRS SC SC SC SC SC IS IS IS SC SC SC IS IS SC SC SC IS TSTMS IS IS IS IS IS SC SC SC IS IS SC SC LAL 2 2 2 1 1 1 1 1 2 2 3 3 3 2 2 3 3 HAINES 3 3 3 3 3 3 4 4 5 5 5 5 5 5 4 4 3 4 MIX HGT 3 <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 <1 4 6 6 <1 T WIND DIR S S S S S SW W W W S S SW W W W W W NW T WIND SPD 10 9 3 2 2 2 5 9 10 8 3 4 4 2 12 11 12 8 DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP ADI 32 6 2 1 1 3 27 70 55 4 2 2 2 2 58 86 89 4 MAX LVORI 3 4 7 7 8 8 3 1 1 3 5 6 6 6 3 1 1 3 STABILITY C E F F F B A A B F G G F B A A A G CEILING 3800 4300 None None None None None None None STA PRES 28.47 28.43 28.43 28.37 28.36 28.33 28.32 28.28 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 84 60 83 56 81 57 81 58 83 TEMP 81 74 65 63 79 72 61 60 77 71 62 61 77 71 63 62 79 73 DEWPT 66 64 60 58 58 58 55 54 56 58 56 56 59 61 58 59 61 63 RH 60 71 84 84 49 61 81 81 48 63 81 84 54 71 84 90 54 71 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC SC FW FW FW FW FW FW FW SC SC SC SC SC SC POP 12HR 60 20 10 5 5 5 10 10 20 RAIN SHWRS IS NM IS 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