EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 334 PM EDT Sat May 18 2013 NCZ003-190900- RAWS 310301 36.48N 80.86W ELEV. 1300 FT 334 PM EDT Sat May 18 2013 DATE 05/18/13 Sun 05/19/13 Mon 05/20/13 Tue UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 EDT 3HRLY 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 MIN/MAX TEMP 63 73 63 80 63 TEMP 71 69 66 65 64 66 69 72 73 70 67 65 64 67 73 77 79 74 69 67 65 68 DEWPT 64 63 63 63 63 63 65 65 65 64 63 62 61 63 65 65 65 65 64 63 63 64 MIN/MAX RH 96 74 95 62 98 RH 79 81 90 93 97 90 87 79 76 81 87 90 90 87 76 67 62 74 84 87 93 87 WIND DIR SE SE SE SE SE SE SE SE SE S S S SW SW W SW S S SW SW NW NW WIND SPD 4 3 3 3 2 2 3 5 5 4 3 2 2 2 3 3 6 4 5 2 2 2 CLOUDS OV OV OV OV OV B2 B2 B2 B2 OV OV OV OV OV B2 B2 B2 B1 B1 SC SC SC CLOUDS(%) 99100100100100 87 84 86 87 93 93 93 92 91 78 70 70 67 61 47 41 50 POP 12HR 70 90 80 40 20 RAIN SHWRS O NM NM NM NM NM NM NM O O NM SC SC SC SC SC SC IS IS IS TSTMS IS IS IS IS IS IS IS IS IS SC IS SC SC SC SC IS LAL 2 2 2 2 2 2 2 2 2 3 1 1 2 3 3 3 3 HAINES 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 MIX HGT 4 4 2 2 2 2 3 3 3 2 2 2 2 2 4 4 4 3 T WIND DIR S S S S S SW SW SW S SW SW SW SW SW W W S S T WIND SPD 16 18 17 19 12 11 8 10 13 16 13 12 11 8 9 11 12 16 DISPERSION VP VP VP VP VP VP VP VP VP PR VP VP ADI 46 25 24 26 14 32 27 25 33 10 6 6 5 18 31 41 33 11 MAX LVORI 3 3 4 4 5 4 4 3 3 4 5 6 6 4 3 1 1 3 DATE 05/21 Wed 05/22/13 Thu 05/23/13 Fri 05/24/13 Sat 05/25/13 UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 EDT 6HRLY 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 MAX/MIN TEMP 85 64 84 64 79 61 78 59 67 TEMP 82 78 69 68 80 77 68 67 76 73 65 65 75 71 63 61 66 64 DEWPT 65 65 62 64 66 65 63 63 65 63 60 60 61 60 57 57 58 57 RH 56 64 78 87 62 67 84 87 69 71 84 84 62 68 81 87 75 78 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC SC B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 SC SC B1 POP 12HR 20 20 30 30 40 30 40 30 30 RAIN SHWRS IS SC IS IS SC SC SC SC SC SC SC SC SC SC SC SC SC SC TSTMS IS IS IS SC SC SC SC SC SC SC SC SC 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; ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX MAX LVORI (INDEX)...................LOW VISIBILITY OCCURRENCE RISK INDEX 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