EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 229 PM EST Mon Nov 23 2009 NCZ003-240900- RAWS 310301 36.48N 80.86W ELEV. 1300 FT 229 PM EST Mon Nov 23 2009 DATE 11/23/09 Tue 11/24/09 Wed 11/25/09 Thu UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 EST 3HRLY 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 MIN/MAX TEMP 41 56 44 58 40 TEMP 47 47 46 44 43 42 50 54 55 51 49 47 46 45 52 56 57 51 47 45 43 41 DEWPT 46 46 45 43 42 41 44 47 47 48 47 45 45 44 45 46 45 44 43 42 42 41 MIN/MAX RH 100 72 98 64 100 RH 96 96 96 96 96 96 80 77 74 89 93 93 96 96 77 69 64 77 86 89 96100 WIND DIR NE N N N NW W S E SE S S S S S S S S SW W NW NW NW WIND SPD 4 3 2 1 1 1 1 2 2 1 2 2 1 1 0 2 4 1 2 3 4 4 CLOUDS OV OV OV OV OV B2 B2 B1 B1 B2 B2 OV OV OV B2 B1 B1 SC SC SC B1 B2 CLOUDS(%) 100100 97 93 90 84 74 61 66 71 84 94100 99 83 67 67 41 36 46 61 76 POP 12HR 10 10 30 20 20 DRIZZLE AR AR ? ? ? ? ? ? RAIN S S S S RAIN SHWRS IS IS IS IS LAL 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 4 3 3 MIX HGT 2 2 1 1 <1 <1 2 3 2 2 2 2 2 2 2 3 3 2 T WIND DIR NE NE N N N S N NE SE SE SE SE S S SW SW W SW T WIND SPD 6 9 6 6 8 0 8 3 3 8 9 6 3 3 6 9 10 5 DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP DATE 11/26 Fri 11/27/09 Sat 11/28/09 Sun 11/29/09 Mon 11/30/09 UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 EST 6HRLY 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 MAX/MIN TEMP 57 36 45 29 50 30 55 33 52 TEMP 55 48 42 37 44 38 34 31 47 41 36 31 51 46 40 34 50 47 DEWPT 40 40 36 29 27 24 25 25 26 26 25 25 27 29 29 29 32 36 RH 57 74 79 72 51 57 69 78 43 55 64 78 39 51 64 82 50 65 WIND SPD <15 <15 <15 <15 15> <15 <15 <15 <15 AVG CLOUDS B2 B2 B1 B2 B2 B2 B1 SC SC SC SC SC SC SC SC B1 B1 B1 POP 12HR 30 30 30 20 5 5 5 20 30 RAIN SHWRS IS SC SC SC SC SC IS IS IS SC SC SNOWSHWRS IS 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