EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 444 AM EST Tue Nov 24 2009 WVZ043-242100- RAWS 465401 37.53N 81.00W ELEV. 2725 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 59 43 55 39 50 TEMP 42 51 56 57 52 49 48 46 44 50 54 54 48 45 43 42 39 45 49 49 43 DEWPT 41 43 44 44 45 44 44 43 43 42 41 40 39 38 38 37 36 35 34 33 32 MAX/MIN RH 60 95 58 87 53 RH 96 74 64 62 77 83 86 89 96 74 61 59 71 76 82 82 89 68 56 54 65 WIND DIR E W SE E SE SE SE SE S S SW SW W W W W SW W W W W WIND SPD 1 1 1 3 2 3 3 3 3 5 6 5 4 4 3 3 3 5 6 6 6 CLOUDS B2 B2 B1 B1 B2 B2 B2 B2 OV OV B2 B1 SC SC B1 B2 B2 B2 B2 OV OV CLOUDS(%) 85 74 63 68 72 74 78 86 95 94 86 61 41 49 67 77 84 84 84 91 97 POP 12HR 10 10 20 20 40 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 1 4 4 <1 1 1 2 2 3 5 6 4 T WIND DIR S NE E SE SE SE S S S SW W SW W W W W W W W W W T WIND SPD 1 3 2 2 9 12 11 10 9 11 17 20 10 13 13 19 20 20 23 25 31 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 33 38 28 43 29 49 34 49 TEMP 38 33 37 34 31 29 41 37 33 30 46 43 39 35 47 43 DEWPT 31 29 28 27 26 25 25 27 25 26 28 30 29 30 31 33 RH 76 85 70 75 81 85 52 67 72 85 49 60 67 82 53 67 WIND SPD <15 <15 15> 15> <15 <15 <15 <15 AVG CLOUDS OV OV OV OV B2 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 POP 12HR 60 60 30 10 10 20 20 30 RAIN SHWRS SC NM NM NM SC IS IS IS IS SC SC SNOWSHWRS NM NM NM SC 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