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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 801 AM EDT Tue Apr 23 2024 NCZ001-232000- RAWS 310141 36.40N 81.29W Elev. 3009 ft 801 AM EDT Tue Apr 23 2024 Date Tue 04/23/24 Wed 04/24/24 Thu 04/25/24 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 MAX/MIN TEMP 60 46 62 41 63 TEMP 54 59 59 58 54 50 47 49 54 59 61 56 50 46 43 45 55 60 61 56 DEWPT 30 29 33 36 35 35 38 41 43 40 38 37 37 36 35 36 37 37 38 38 MAX/MIN RH 31 78 42 76 41 RH 40 32 37 44 48 56 71 74 66 49 42 49 61 68 73 70 51 42 42 51 WIND DIR SW S SW S SW W W W W NW NW NW NW NW N N SE S S SE WIND SPD 6 10 11 9 8 10 14 14 12 12 11 9 6 5 4 4 4 4 5 5 WIND GUST 25 CLOUDS FW FW FW SC FW B1 B2 B1 B1 SC SC FW CL CL CL FW FW FW FW FW CLOUDS(%) 7 11 14 37 25 51 76 64 57 30 41 19 4 4 4 7 7 16 15 19 VSBY 10 10 10 10 10 10 10 10 10 10 10 10 POP 12HR 0 20 20 0 5 RAIN SHWRS IS IS IS LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 5 5 4 4 4 4 3 3 3 3 4 4 4 4 4 4 4 4 5 MIX HGT 3 5 5 <1 <1 <1 1 <1 3 5 6 <1 <1 <1 <1 <1 4 6 5 <1 T WIND DIR W SW SW S SW SW W W NW NW NW NW NW N N N E S S SE T WIND SPD 9 11 17 11 9 6 20 19 21 17 14 14 5 5 5 4 2 2 5 9 DISPERSION PR PR FR GD PR PR PR VP PR ADI 36 71 73 8 6 6 19 25 52 69 65 10 3 3 3 4 13 18 37 4 MAX LVORI 1 1 1 2 2 3 3 3 1 1 1 2 3 3 4 3 2 2 1 2 STABILITY B B C E E D D D D C C E F F F A A A A F CEILING None None None 4700 None None None None None None STA PRES 27.32 27.25 27.23 27.19 27.22 27.24 27.30 27.33 27.37 27.35 Date Fri 04/26/24Sat 04/27/24Sun 04/28/24Mon 04/29/24 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 MIN/MAX TEMP 44 58 49 64 53 70 54 72 TEMP 48 46 54 55 52 50 61 60 56 55 67 64 58 58 71 66 DEWPT 40 42 45 46 46 45 48 48 50 50 51 51 52 51 52 51 RH 74 86 71 72 80 83 62 64 80 83 56 63 80 77 51 58 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC B1 B1 B1 B1 B2 B2 B1 B1 SC SC SC SC SC SC POP 12HR 5 20 10 10 5 5 5 30 RAIN SHWRS IS SC TSTMS 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 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