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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE Blacksburg VA 801 PM EDT Thu Apr 18 2024 NCZ019-190800- RAWS 312001 36.23N 81.32W Elev. 2380 ft 801 PM EDT Thu Apr 18 2024 Date 04/18/24 Fri 04/19/24 Sat 04/20/24 Sun 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 76 54 69 46 TEMP 65 62 60 60 66 72 74 68 63 59 57 57 63 68 67 59 55 51 49 48 DEWPT 41 41 43 45 49 52 53 55 55 53 50 46 45 41 37 34 32 32 34 35 MIN/MAX RH 58 46 80 33 61 RH 41 46 53 58 54 49 48 63 75 80 77 67 52 37 33 39 41 48 56 60 WIND DIR N NW NE N S SW W W NW N N N NW NW NW NW NW N N NE WIND SPD 2 2 2 1 3 4 8 6 5 5 4 5 6 10 10 9 6 4 3 2 CLOUDS FW SC SC B2 OV B2 B1 B1 B1 B1 B1 B2 B1 B1 SC SC SC SC B1 B2 CLOUDS(%) 7 35 47 84 97 79 67 62 62 57 64 71 57 57 44 43 50 50 64 74 VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 POP 12HR 20 50 30 10 20 RAIN SHWRS IS SC SC SC SC IS IS IS TSTMS SC SC LAL 1 1 1 1 1 1 3 3 1 1 1 1 1 1 1 1 HAINES 5 5 5 5 4 4 3 3 3 3 3 3 4 4 4 4 MIX HGT <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1 3 5 5 <1 T WIND DIR NW NW NW NW SW SW SW W NW N N N N NW NW NW T WIND SPD 1 2 2 2 13 13 11 3 9 12 12 12 11 12 12 16 DISPERSION VP VP VP PR PR PR VP PR PR VP VP ADI 1 1 1 2 28 50 42 2 6 8 8 15 43 74 72 14 MAX LVORI 2 2 2 3 2 1 1 3 3 4 4 3 1 1 1 2 STABILITY G G F A B C C E E E E B B B B D CEILING None 23700 5700 2200 3000 19000 15800 None None STA PRES 27.94 27.91 27.89 27.83 27.86 27.90 27.93 27.91 Date 04/21Mon 04/22/24Tue 04/23/24Wed 04/24/24Thu 04/25/24 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 57 42 61 42 70 50 71 45 67 TEMP 55 52 46 45 57 55 47 47 64 63 56 54 67 62 52 49 63 61 DEWPT 39 39 36 34 36 39 35 37 41 43 44 45 44 42 38 38 38 39 RH 55 61 68 65 45 55 63 68 43 48 64 71 43 48 59 66 39 44 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B2 B2 B2 B1 SC SC FW FW FW FW SC SC SC SC FW SC SC SC POP 12HR 30 20 10 0 0 10 20 5 10 RAIN SHWRS IS SC 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 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