EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 502 AM EDT Sun May 19 2013 NCZ006-192100- RAWS 310801 36.37N 79.29W ELEV. 580 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 77 65 78 64 86 TEMP 66 71 74 76 73 69 67 66 68 73 76 77 73 69 67 65 69 78 83 85 80 DEWPT 63 64 65 65 65 65 64 64 64 65 65 64 65 66 65 65 66 67 66 66 66 MAX/MIN RH 69 96 65 100 52 RH 90 79 74 69 76 87 90 93 87 76 69 64 76 90 93100 90 69 57 53 62 WIND DIR S S S S S S S S S SW SW S SW SW SW SW SW SW W SW W WIND SPD 4 8 9 8 8 5 5 4 5 6 6 8 6 4 4 4 5 6 5 4 2 CLOUDS OV OV OV OV OV OV OV OV OV OV OV B2 B2 B1 B1 B1 B1 B1 SC SC B1 CLOUDS(%) 100100100100100100100100 98 92 91 84 76 65 56 62 66 53 33 48 55 POP 12HR 90 90 60 50 10 RAIN SHWRS O NM NM O O O NM NM SC SC SC NM SC SC SC SC TSTMS SC SC SC SC IS IS SC NM SC LAL 1 1 3 3 3 3 1 1 2 2 3 4 3 1 1 1 1 1 1 1 HAINES 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 2 2 3 4 4 3 MIX HGT 1 2 3 3 3 2 1 1 1 2 3 3 2 1 <1 <1 1 2 4 3 3 T WIND DIR S S S S S S S S S S S S SW SW SW SW SW SW SW SW S T WIND SPD 9 9 10 17 23 23 21 23 21 17 12 16 17 11 4 8 12 10 8 9 11 DISPERSION PR PR PR VP PR VP VP VP VP ADI 13 19 28 41 31 16 15 15 35 36 32 35 12 7 3 6 19 23 29 30 5 MAX LVORI 5 3 3 1 3 4 4 4 4 3 3 1 3 5 6 9 4 3 2 1 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 67 87 67 82 65 80 62 71 TEMP 72 72 83 80 72 71 80 76 69 68 77 74 66 64 69 67 DEWPT 66 67 67 66 66 66 66 65 64 64 63 62 61 60 59 59 RH 81 84 59 62 81 84 62 69 84 87 62 66 84 87 70 75 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC B1 B1 B1 B2 B2 B2 B2 B2 B2 B1 SC SC POP 12HR 10 30 20 40 30 40 30 30 RAIN SHWRS SC SC IS IS SC SC SC SC SC SC SC SC SC SC TSTMS SC SC IS IS 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