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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 331 AM EDT Fri Apr 19 2024 WVZ043-192000- RAWS 465401 37.53N 81.00W Elev. 2725 ft 331 AM EDT Fri Apr 19 2024 Date Fri 04/19/24 Sat 04/20/24 Sun 04/21/24 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 72 45 60 39 54 TEMP 56 57 64 68 70 63 56 52 49 46 51 57 58 53 46 43 40 41 46 50 51 48 DEWPT 41 45 51 54 55 53 52 43 39 36 32 29 28 29 30 29 29 29 29 29 29 28 MAX/MIN RH 52 85 31 67 43 RH 57 64 63 61 59 70 86 71 68 68 48 34 32 39 53 57 64 62 51 44 42 46 WIND DIR S S SW SW W NW NW NW NW NW NW NW W NW NW NW NW NW NW NW NW NW WIND SPD 4 3 6 9 9 9 8 9 8 6 8 10 10 6 3 4 3 3 4 6 8 8 CLOUDS SC B1 OV B1 B2 B1 B2 B2 B1 SC SC SC SC B1 B1 B1 B1 B2 B2 B2 B2 B1 CLOUDS(%) 45 61100 61 73 67 86 86 68 45 30 26 38 51 52 56 54 75 77 81 71 66 VSBY 10 10 5 8 6 5 6 7 10 10 10 10 10 10 POP 12HR 70 30 0 10 10 RAIN SHWRS SC NM SC SC SC IS TSTMS IS SC SC SC SC LAL 1 2 3 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 6 5 4 3 3 3 3 4 4 4 4 3 3 3 3 2 2 2 2 3 3 3 MIX HGT <1 <1 1 4 2 1 1 1 1 1 3 5 6 <1 1 <1 <1 2 4 5 5 1 T WIND DIR SE SE S S W N N N N NW NW NW W W NW N N N W W NW NW T WIND SPD 5 4 3 5 8 3 13 13 14 6 8 16 20 17 17 12 9 4 3 9 11 14 DISPERSION VP PR PR PR PR PR VP VP VP PR ADI 4 5 6 20 22 4 12 12 13 12 34 96133 12 8 8 4 9 17 38 47 13 MAX LVORI 3 3 3 2 2 3 4 3 3 3 1 1 1 2 2 2 3 3 2 1 1 2 STABILITY E B D C C D D D D B B B B E F E F B B C C D CEILING 2300 2100 700 100 None None None 10300 8800 3100 STA PRES 27.62 27.58 27.65 27.66 27.68 27.65 27.65 27.67 27.67 27.61 Date Mon 04/22/24Tue 04/23/24Wed 04/24/24Thu 04/25/24 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 35 59 38 67 48 60 35 61 TEMP 39 39 56 52 41 43 63 59 50 51 58 52 40 39 57 52 DEWPT 28 30 30 33 33 34 35 38 41 45 39 38 32 31 33 36 RH 64 70 37 48 73 70 35 45 71 80 49 59 73 73 40 54 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC FW FW FW FW FW FW SC B1 B2 B1 SC SC FW FW SC POP 12HR 0 5 0 5 30 30 10 10 RAIN SHWRS SC SC SC 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