EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 319 PM EDT Mon May 20 2013 NCZ019-210900- RAWS 312001 36.23N 81.32W ELEV. 2380 FT 319 PM EDT Mon May 20 2013 DATE 05/20/13 Tue 05/21/13 Wed 05/22/13 Thu 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 59 84 62 81 61 TEMP 74 71 66 63 62 65 75 80 83 77 70 67 65 66 74 78 80 74 69 66 63 65 DEWPT 62 63 63 62 61 62 63 61 60 61 61 61 60 61 62 61 60 61 60 59 58 59 MIN/MAX RH 100 46 94 51 91 RH 66 76 90 97 97 90 66 52 46 58 73 81 84 84 66 56 51 64 73 78 84 81 WIND DIR S SW W W W NW W S S S SW SW SW SW SW SW SW S S SW SW SW WIND SPD 6 3 2 2 1 1 3 2 5 3 3 5 4 2 8 9 9 6 5 3 5 3 CLOUDS B2 B2 B1 B1 B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 CLOUDS(%) 74 71 57 53 53 55 57 65 70 65 59 56 54 56 62 69 73 75 76 77 81 82 POP 12HR 30 40 40 50 50 RAIN SHWRS SC SC IS SC SC SC SC IS SC SC SC SC SC SC IS IS SC TSTMS SC SC SC SC SC SC SC SC SC SC SC SC LAL 3 3 1 1 1 1 1 3 3 3 1 1 1 3 3 3 3 HAINES 4 4 4 5 4 3 4 4 3 3 3 3 5 5 3 3 3 3 MIX HGT 3 2 <1 <1 <1 <1 3 6 7 4 <1 <1 <1 1 4 6 7 5 T WIND DIR SW SW SW W W NW NW SE S S SW SW SW SW SW SW SW SW T WIND SPD 8 9 3 3 3 3 6 2 9 12 8 9 8 9 10 11 16 16 DISPERSION VP VP VP VP VP VP PR VP PR PR VP PR ADI 17 4 2 2 1 4 25 12 31 6 3 4 4 14 30 37 55 7 MAX LVORI 2 4 7 8 8 6 3 2 1 3 3 4 5 4 3 1 1 3 DATE 05/23 Fri 05/24/13 Sat 05/25/13 Sun 05/26/13 Mon 05/27/13 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 80 58 74 52 74 52 74 55 73 TEMP 77 72 63 61 71 66 57 57 70 67 57 57 70 67 59 59 70 68 DEWPT 56 55 55 54 52 51 49 48 48 51 49 50 52 54 53 53 54 54 RH 48 55 75 78 51 58 75 72 45 56 75 77 53 63 80 80 57 61 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B2 B1 B1 SC SC B1 SC FW FW FW SC SC B1 B1 B1 B2 B2 B2 POP 12HR 40 30 40 20 10 0 10 10 20 RAIN SHWRS SC SC SC SC SC SC IS IS IS TSTMS SC SC SC IS IS $$ 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