EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 444 AM EST Tue Nov 24 2009 NCZ006-242100- RAWS 310801 36.37N 79.29W ELEV. 580 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 46 59 44 62 TEMP 46 51 54 55 52 50 49 48 47 54 58 58 53 50 48 47 45 54 59 60 52 DEWPT 44 46 48 48 48 48 47 46 47 47 46 45 44 43 42 42 41 40 39 38 37 MAX/MIN RH 75 100 61 85 43 RH 93 83 80 77 86 93 93 93100 77 64 62 71 77 80 83 86 59 47 44 56 WIND DIR N N NE E E E E E N NW W W W NW NW NW W W W W W WIND SPD 2 2 4 2 1 1 0 0 1 3 4 4 4 3 2 2 2 3 4 4 4 CLOUDS B2 B2 B2 OV OV OV OV OV OV B2 B1 SC SC SC SC B1 B2 B2 B1 B1 B1 CLOUDS(%) 73 80 86 89 92 94 98 94 90 75 62 50 42 38 42 57 71 71 66 64 61 POP 12HR 10 10 10 10 30 DRIZZLE AR AR AR RAIN SHWRS 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 3 3 2 2 3 3 3 3 4 4 3 3 4 4 4 4 4 MIX HGT 1 2 2 2 1 1 2 2 1 2 3 3 <1 <1 <1 <1 <1 2 4 5 <1 T WIND DIR N NE N E E E E SE E S SW SW S S S S S N W W S T WIND SPD 9 10 8 4 8 10 9 3 3 6 12 9 11 0 0 0 0 9 6 14 0 DISPERSION VP VP VP VP VP VP VP VP VP 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 39 53 34 55 33 58 36 60 TEMP 46 40 51 45 39 35 52 46 40 35 54 49 42 37 56 52 DEWPT 35 34 32 30 29 28 31 32 29 28 30 32 32 33 36 39 RH 65 79 48 55 67 75 44 58 64 75 40 52 67 85 47 61 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B1 B1 B1 B1 SC SC FW FW FW FW FW SC SC SC SC B1 POP 12HR 30 30 5 5 5 5 20 30 RAIN SHWRS SC IS SC SC 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