EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 932 PM EDT Tue May 21 2013 NCZ003-220900- RAWS 310301 36.48N 80.86W ELEV. 1300 FT 932 PM EDT Tue May 21 2013 DATE 05/21/13 Wed 05/22/13 Thu 05/23/13 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 63 81 63 78 56 TEMP 71 67 64 67 74 78 80 75 70 67 65 66 72 76 77 71 64 61 59 59 DEWPT 64 63 63 64 66 64 62 62 62 62 62 62 61 60 59 57 56 54 53 51 MIN/MAX RH 99 55 88 52 72 RH 79 87 97 90 76 62 54 64 76 84 90 87 68 58 54 61 75 78 80 75 WIND DIR SW SW W SE S S S S S S SW SW SW SW SW W W NW NW NW WIND SPD 1 1 0 1 4 9 8 8 6 5 5 4 6 8 8 6 6 8 11 13 CLOUDS SC B1 B1 SC SC B1 B1 B1 OV OV B2 B2 B1 B1 B1 B1 B1 B1 SC SC CLOUDS(%) 49 52 54 46 48 62 62 67 93 91 83 78 65 56 63 54 56 58 49 39 POP 12HR 40 40 40 60 20 RAIN SHWRS SC IS SC SC SC SC SC SC SC SC SC SC NM NM IS IS TSTMS SC SC SC SC IS IS SC IS SC SC SC SC LAL 3 1 1 1 3 3 3 3 3 1 1 3 3 3 3 HAINES 4 4 4 4 3 4 3 3 3 3 4 3 3 3 4 4 MIX HGT 1 <1 <1 1 3 4 6 4 3 2 2 2 5 7 8 5 T WIND DIR SW SW W SW SW SW SW S SW SW SW SW W W W W T WIND SPD 10 1 0 4 10 16 16 18 21 19 14 13 17 13 16 19 DISPERSION VP VP VP PR PR PR PR PR PR PR FR ADI 5 1 0 6 33 63 53 12 15 13 10 28 52 47 58 13 MAX LVORI 4 6 8 5 3 1 1 2 3 4 4 3 1 1 1 2 DATE 05/24 Sat 05/25/13 Sun 05/26/13 Mon 05/27/13 Tue 05/28/13 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 69 45 71 51 74 55 74 57 77 TEMP 67 64 51 51 67 64 56 56 70 68 60 60 71 68 61 62 74 71 DEWPT 43 45 42 43 44 50 47 49 53 55 53 54 57 57 56 56 60 60 RH 42 50 71 74 43 60 72 77 55 63 78 81 61 68 84 81 62 68 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC FW FW FW SC SC SC B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 POP 12HR 0 10 5 5 10 20 30 20 20 RAIN SHWRS IS IS SC SC IS IS IS IS TSTMS 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