EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 502 AM EDT Sun May 19 2013 NCZ003-192100- RAWS 310301 36.48N 80.86W ELEV. 1300 FT 502 AM EDT Sun May 19 2013 DATE Sun 05/19/13 Mon 05/20/13 Tue 05/21/13 UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 EDT 3HRLY 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 MAX/MIN TEMP 71 63 78 63 85 TEMP 64 68 70 71 69 66 65 64 66 72 75 77 73 68 66 65 68 77 82 84 78 DEWPT 62 64 64 65 64 63 63 63 63 65 65 65 65 64 63 63 64 65 65 65 65 MAX/MIN RH 82 97 66 98 52 RH 93 87 81 81 84 90 93 97 90 79 71 67 76 87 90 93 87 67 56 53 64 WIND DIR E SE SE SE S SE S SW SW W SW S S SW SW NW NW W SW SW SW WIND SPD 3 3 4 5 4 2 1 1 1 3 3 6 4 5 2 2 2 3 3 4 3 CLOUDS OV OV OV OV OV OV OV OV OV B2 B2 B2 B1 B1 SC SC SC SC SC SC SC CLOUDS(%) 100100100100100100 93 92 91 78 70 70 67 61 47 41 50 36 48 47 40 POP 12HR 90 70 40 30 20 RAIN SHWRS O O O O NM NM SC SC SC SC SC SC SC IS IS IS IS IS SC SC IS TSTMS IS IS SC SC IS IS IS IS IS LAL 1 1 1 1 1 1 1 1 2 2 3 3 1 1 1 1 2 2 2 2 HAINES 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 MIX HGT 2 3 4 4 3 2 2 2 2 3 4 4 3 2 1 1 1 3 6 5 4 T WIND DIR S S S S S S SW SW SW SW W W W W W W W NW N E SE T WIND SPD 12 12 12 13 13 12 11 8 5 5 5 5 5 5 4 3 2 3 5 6 5 DISPERSION VP VP VP VP VP PR VP VP VP ADI 35 44 37 36 10 6 5 4 16 18 22 15 4 4 2 1 3 17 40 26 3 MAX LVORI 4 4 3 3 4 5 6 6 4 3 3 2 3 5 6 7 6 3 1 2 3 DATE Wed 05/22/13 Thu 05/23/13 Fri 05/24/13 Sat 05/25/13 UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 EDT 6HRLY 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 MIN/MAX TEMP 64 84 64 79 61 78 59 67 TEMP 69 68 80 77 68 67 76 73 65 65 75 71 63 61 66 64 DEWPT 62 64 66 65 63 63 65 63 60 60 61 60 57 57 58 57 RH 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 AVG CLOUDS SC SC SC B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 SC SC B1 POP 12HR 20 30 30 40 30 40 30 30 RAIN SHWRS IS IS SC SC SC SC SC SC SC SC SC SC SC SC SC SC TSTMS 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