EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 444 AM EST Tue Nov 24 2009 NCZ019-242100- RAWS 312001 36.23N 81.32W ELEV. 2380 FT 444 AM EST Tue Nov 24 2009 DATE Tue 11/24/09 Wed 11/25/09 Thu 11/26/09 UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 EST 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 MAX/MIN TEMP 56 42 57 37 55 TEMP 44 50 54 55 50 48 46 45 43 51 55 55 48 45 42 41 38 47 52 53 46 DEWPT 42 44 44 45 46 46 45 44 42 41 40 39 38 38 37 36 35 34 34 33 32 MAX/MIN RH 67 99 54 89 45 RH 93 80 69 69 86 93 96 96 96 68 57 55 68 76 82 82 89 60 50 46 58 WIND DIR N S SE SE NW W N SW W W W W W W NW W W W W W W WIND SPD 0 0 2 2 0 0 0 0 2 4 5 4 3 2 3 3 3 4 5 6 8 CLOUDS B2 B2 B2 B2 B2 B2 OV OV OV OV B2 B1 SC SC SC B1 B2 B2 B2 B2 B2 CLOUDS(%) 85 82 78 82 84 87 90 95100 88 75 56 41 37 44 61 77 81 79 77 74 POP 12HR 10 10 20 20 30 DRIZZLE AR ? RAIN SHWRS IS IS IS IS IS SC SC SC LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 MIX HGT <1 1 2 2 1 1 1 <1 1 2 2 3 1 <1 <1 <1 <1 2 4 5 4 T WIND DIR N SE SE S S W SW SW SW SW SW SW W S S S S NW W W NW T WIND SPD 4 1 2 5 3 4 6 5 2 4 9 9 3 0 0 0 0 11 16 20 28 DISPERSION VP VP VP VP VP VP VP VP PR DATE Fri 11/27/09 Sat 11/28/09 Sun 11/29/09 Mon 11/30/09 UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 EST 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 MIN/MAX TEMP 34 47 31 51 30 56 32 52 TEMP 40 35 45 40 36 32 48 42 36 31 52 46 39 34 50 47 DEWPT 30 29 27 25 25 24 26 26 24 25 27 29 29 28 32 36 RH 67 78 49 55 64 72 42 53 61 78 38 51 67 78 50 65 WIND SPD <15 <15 15> 15> <15 <15 <15 <15 AVG CLOUDS B2 B2 B2 B1 SC SC SC SC FW FW FW FW SC SC B1 B1 POP 12HR 30 30 20 5 5 5 20 30 RAIN SHWRS SC SC SC SC IS IS IS IS SC SC SNOWSHWRS SC IS IS SC $$ BELOW IS A WEATHER ELEMENT KEY FOR THIS PRODUCT 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(CAT).........................CLOUD COVER CATEGORY EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED; BK = BROKEN; OV = OVERCAST CLOUDS(%)...........................CLOUD COVER AS A PERCENTAGE 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(CAT)............................LIGHTNING ACTIVITY LEVEL HAINES(CAT).........................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; 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(CAT).....................AVERAGE CLOUD COVER CATEGORY POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION WEATHER... SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS