EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 939 PM EDT Sat May 25 2013 VAZ015-260900- PINE_MOUNTAIN PRESCRIBED BURN 36.65N 81.52W ELEV. 5400 FT 939 PM EDT Sat May 25 2013 DATE 05/25/13 Sun 05/26/13 Mon 05/27/13 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 38 64 45 70 54 TEMP 50 49 43 43 54 60 63 57 52 49 47 50 60 66 69 64 60 57 56 58 DEWPT 27 25 29 35 36 40 39 40 40 40 40 42 44 45 46 48 50 49 49 51 MIN/MAX RH 85 43 77 48 85 RH 41 39 57 73 50 47 41 53 63 71 76 74 55 47 44 56 69 75 77 77 WIND DIR NW NW NW NW NW NW NW NW NW NW SE S S W SW S S S S S WIND SPD 5 5 4 4 8 10 10 5 2 0 0 1 3 5 4 1 2 2 2 2 CLOUDS B1 B1 B2 B2 B1 B1 B1 FW SC B1 B1 B2 B2 B2 B1 B1 B1 B1 B1 B1 CLOUDS(%) 54 65 71 78 52 55 56 19 40 59 63 70 74 70 65 60 59 55 52 51 POP 12HR 5 10 20 20 10 RAIN SHWRS IS IS IS IS IS LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 3 4 4 4 3 2 3 3 3 3 3 3 3 4 4 4 MIX HGT <1 <1 <1 2 4 5 5 3 <1 <1 <1 1 5 6 6 4 T WIND DIR NW NW NW NW NW NW NW W W W S W NW W SW SW T WIND SPD 6 5 14 26 23 18 16 11 5 4 4 9 14 13 13 16 DISPERSION PR PR VP PR VP VP VP VP VP VP VP ADI 5 4 15 54 64 55 55 5 4 4 4 19 62 43 47 7 MAX LVORI 3 3 3 3 1 1 1 2 3 4 4 3 1 1 1 3 DATE 05/28 Wed 05/29/13 Thu 05/30/13 Fri 05/31/13 Sat 06/01/13 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 71 56 75 57 76 57 78 58 77 TEMP 68 66 59 60 72 69 61 61 73 70 61 62 75 71 62 63 74 69 DEWPT 53 53 52 53 54 58 55 56 53 58 56 57 53 58 56 57 53 59 RH 59 63 78 78 53 68 81 84 49 66 84 84 46 63 81 81 48 70 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B1 B2 B1 SC B1 B1 B1 SC SC B1 SC FW SC SC SC SC SC SC POP 12HR 20 20 20 20 20 10 10 10 10 RAIN SHWRS IS IS IS IS IS IS TSTMS IS IS IS IS 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