EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 444 AM EST Tue Nov 24 2009 VAZ012-242100- RAWS 447502 37.01N 81.18W ELEV. 2540 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 58 41 58 35 52 TEMP 41 50 55 56 51 48 46 44 42 51 56 56 48 44 41 39 36 45 50 50 44 DEWPT 40 42 44 44 44 45 45 44 41 40 39 38 37 37 36 35 34 33 32 31 30 MAX/MIN RH 61 100 50 91 45 RH 96 74 66 64 77 89 96100 96 66 53 51 65 76 82 85 92 62 50 48 57 WIND DIR N NW NW SE SE SE SE S S SW W W SW W W W W W W W W WIND SPD 0 1 2 1 1 2 2 3 2 5 8 6 5 4 3 4 5 6 8 8 9 CLOUDS OV B2 B1 B1 B2 B2 B2 OV OV OV B2 B1 SC SC B1 B2 B2 B2 B2 OV OV CLOUDS(%) 89 75 62 68 72 75 78 88 97 95 87 62 42 48 64 74 80 80 81 91100 POP 12HR 10 10 20 20 30 DRIZZLE AR RAIN SHWRS IS IS IS IS SC SC 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 3 3 <1 1 1 1 1 2 5 4 2 <1 1 1 1 3 5 5 4 T WIND DIR W NE E SE SE S SW S SW W W W W W W W W W W W W T WIND SPD 1 3 3 3 5 10 10 9 10 16 26 27 25 21 20 17 21 19 21 24 31 DISPERSION VP VP VP VP PR 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 32 36 25 42 27 48 32 49 TEMP 38 33 36 32 28 26 39 35 31 28 45 41 37 33 46 43 DEWPT 28 26 26 23 24 23 22 21 21 21 23 24 25 26 27 30 RH 67 75 67 69 85 88 50 56 66 75 41 50 61 75 47 60 WIND SPD <15 15> 15> 15> 15> <15 <15 <15 AVG CLOUDS OV OV OV B2 B2 B1 B1 B1 SC SC SC SC SC B1 B2 B2 POP 12HR 60 40 20 10 10 20 30 30 RAIN SHWRS SC NM SC SC IS IS SC SC SC SC SNOWSHWRS NM SC SC IS IS IS SC 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