EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 406 AM EDT Wed Jun 19 2013 VAZ020-192100- BIG_WILSON_NORTH PRESCRIBED BURN 37.98N 79.80W ELEV. 3800 FT 406 AM EDT Wed Jun 19 2013 DATE Wed 06/19/13 Thu 06/20/13 Fri 06/21/13 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 70 57 73 57 75 TEMP 59 60 65 68 69 65 61 60 58 61 67 70 72 67 62 60 59 61 68 72 74 70 DEWPT 56 54 56 56 57 58 57 57 56 55 57 59 59 59 56 54 55 57 56 56 56 57 MAX/MIN RH 65 93 64 95 53 RH 90 81 73 65 66 78 87 90 93 81 70 68 64 75 81 81 87 87 65 57 53 63 WIND DIR NW N NE E NE SE SE SE SE SE SE S SE SE S SW W NW SW SE SE SE WIND SPD 5 5 3 4 4 4 0 1 1 3 4 5 5 5 5 5 5 5 3 2 2 3 CLOUDS B1 SC B1 B1 B1 B1 SC B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC CLOUDS(%) 60 40 52 69 61 61 49 55 63 55 59 59 50 40 34 31 29 30 33 38 44 48 POP 12HR 30 10 20 10 10 RAIN SHWRS SC SC IS IS TSTMS IS IS IS IS LAL 1 1 1 2 2 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 1 HAINES 3 3 3 4 4 3 3 3 3 3 3 2 3 3 2 2 2 2 2 2 3 2 MIX HGT <1 <1 2 2 2 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 3 3 3 <1 T WIND DIR N N NE SE SE SE SE SE SE S S S S SE S S SW NW NE NE NE SE T WIND SPD 10 10 4 6 5 8 5 8 6 5 6 6 5 5 6 9 4 3 4 3 3 3 DISPERSION PR VP VP VP VP PR PR PR PR VP ADI 10 11 15 14 12 6 4 6 6 6 14 18 22 2 4 4 3 4 16 13 14 2 MAX LVORI 6 4 4 3 3 4 6 7 8 5 3 3 2 3 5 5 6 5 3 2 2 3 DATE Sat 06/22/13 Sun 06/23/13 Mon 06/24/13 Tue 06/25/13 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 60 79 61 80 62 81 63 82 TEMP 63 65 76 72 64 65 77 74 66 67 78 75 67 67 79 75 DEWPT 59 59 62 64 61 61 63 65 62 62 63 66 63 63 64 66 RH 87 81 62 76 90 87 62 74 87 84 60 74 87 87 60 74 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC B1 SC FW SC B1 SC SC SC B1 SC SC SC B1 POP 12HR 10 20 10 20 10 30 20 30 RAIN SHWRS IS IS SC IS SC SC TSTMS IS IS 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