EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 334 PM EDT Sat May 18 2013 VAZ012-190900- RAWS 447502 37.01N 81.18W ELEV. 2540 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 60 74 61 81 60 TEMP 71 68 64 62 61 63 68 71 73 71 67 64 63 65 73 77 80 74 68 65 63 66 DEWPT 60 60 59 59 59 60 61 61 61 60 59 58 57 59 61 61 61 60 60 59 59 61 MIN/MAX RH 96 62 88 52 95 RH 68 76 84 90 93 90 78 71 66 68 75 81 81 81 66 58 52 62 76 81 87 84 WIND DIR SE SE SE SE SE S S S S S S S SW W W W SW S SW W W W WIND SPD 6 5 5 3 3 2 4 4 4 4 3 2 2 3 6 5 5 4 4 4 3 4 CLOUDS OV OV OV OV OV B2 B2 B2 B2 OV B2 OV OV B2 B2 B1 B1 B1 SC SC SC SC CLOUDS(%) 98100100100 89 84 83 84 84 91 87 90 89 87 73 58 56 58 49 42 48 44 POP 12HR 60 80 70 40 20 RAIN SHWRS O NM NM SC SC SC SC NM O NM SC SC SC SC SC SC SC IS IS IS IS IS TSTMS IS IS IS IS IS IS IS IS IS SC SC SC SC SC IS LAL 2 2 2 2 2 2 2 2 2 3 1 1 1 3 3 3 3 HAINES 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 4 4 MIX HGT 4 3 2 1 1 1 3 4 4 3 2 1 <1 1 4 5 5 3 T WIND DIR S S S S S S SW SW SW SW SW SW SW W W W SW S T WIND SPD 23 21 21 13 11 9 8 11 12 13 12 11 5 11 14 16 10 14 DISPERSION PR PR VP VP VP VP VP VP VP VP VP VP ADI 64 29 29 16 5 16 21 31 35 10 6 5 2 21 42 47 31 10 MAX LVORI 1 3 4 4 6 4 3 3 3 3 4 4 5 3 1 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 83 61 79 61 74 58 72 56 61 TEMP 79 75 66 65 76 73 65 64 72 68 62 61 70 67 59 57 60 59 DEWPT 62 62 60 61 64 63 60 61 62 60 57 57 58 57 55 54 55 55 RH 56 64 81 87 66 71 84 90 71 76 84 87 66 70 87 90 84 87 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 SC SC SC B1 POP 12HR 20 30 40 40 50 30 40 30 30 RAIN SHWRS IS IS SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC TSTMS IS IS SC SC SC SC SC SC SC SC SC IS 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