EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 1013 PM EDT Tue Jun 18 2013 WVZ043-190900- SANDSTONE PRESCRIBED BURN 37.78N 80.90W ELEV. 1700 FT 1013 PM EDT Tue Jun 18 2013 DATE 06/18/13 Wed 06/19/13 Thu 06/20/13 Fri 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 58 75 51 79 56 TEMP 63 61 60 62 70 73 74 67 60 56 54 58 68 74 77 71 64 61 58 61 DEWPT 61 59 58 59 59 59 58 57 54 53 53 54 56 58 59 61 61 60 58 58 MIN/MAX RH 98 56 100 53 100 RH 93 93 93 90 68 62 57 70 81 90 96 86 65 57 54 71 90 97100 90 WIND DIR NW NW NW NW NW NW N N NE E SE SE S SW S SE SE SE SE S WIND SPD 2 1 1 2 5 9 6 4 2 1 1 2 2 3 2 2 1 1 1 2 CLOUDS SC SC SC B1 SC SC SC SC SC FW FW FW SC B1 B1 SC FW FW FW FW CLOUDS(%) 32 50 50 53 50 45 45 42 32 22 13 14 38 60 62 42 25 8 8 14 POP 12HR 30 20 10 20 10 RAIN SHWRS SC IS IS IS IS IS IS TSTMS IS IS LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 HAINES 3 3 3 3 3 3 4 3 4 5 4 4 3 3 5 4 MIX HGT 2 2 2 2 5 5 5 <1 <1 <1 <1 <1 3 5 7 <1 T WIND DIR N NW NW NW NW NW NW N NE E E E SW W W S T WIND SPD 13 11 10 9 13 12 10 4 2 2 2 1 2 4 4 3 DISPERSION VP VP VP VP VP VP VP VP VP VP VP ADI 6 6 5 31 46 52 44 2 1 1 1 2 11 20 24 2 MAX LVORI 6 7 9 4 3 1 1 5 10 10 10 8 3 2 2 4 DATE 06/21 Sat 06/22/13 Sun 06/23/13 Mon 06/24/13 Tue 06/25/13 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 78 57 84 62 85 63 85 64 85 TEMP 75 71 61 63 80 76 67 68 81 77 68 69 81 78 68 69 82 78 DEWPT 60 62 60 61 64 65 60 62 66 66 61 63 67 67 62 64 67 67 RH 60 73 97 93 58 69 78 81 60 69 78 81 63 69 81 84 61 69 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC B1 SC FW FW B1 SC FW SC B1 SC SC SC B1 B1 SC SC B1 POP 12HR 20 10 20 10 30 20 30 20 40 RAIN SHWRS IS IS SC IS SC IS IS SC SC TSTMS IS IS 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