EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES NATIONAL WEATHER SERVICE BLACKSBURG VA 944 AM EDT Mon May 20 2013 NCZ006-202100- RAWS 310801 36.37N 79.29W ELEV. 580 FT 944 AM EDT Mon May 20 2013 DATE Mon 05/20/13 Tue 05/21/13 Wed 05/22/13 UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 EDT 3HRLY 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 MAX/MIN TEMP 81 64 89 65 87 TEMP 72 78 79 75 70 68 66 70 79 85 88 81 74 71 68 70 79 83 86 79 DEWPT 66 66 66 66 66 64 64 67 67 66 65 65 65 65 64 65 65 64 63 63 MAX/MIN RH 63 100 46 95 46 RH 81 67 64 74 87 87 93 90 67 53 47 58 74 81 87 84 62 53 46 58 WIND DIR SW SW SW S SW SW SW S SW SW S SW SW S SW SW SW SW S S WIND SPD 6 6 5 4 2 4 3 3 8 5 6 4 2 3 3 4 6 8 6 4 CLOUDS OV B1 B2 OV B2 B2 B2 B2 SC SC B1 SC B1 B1 B1 B1 B1 B1 SC B1 CLOUDS(%) 96 62 83 88 81 83 78 72 42 48 54 49 61 61 63 63 60 53 50 51 POP 12HR 80 50 30 30 20 RAIN SHWRS O NM SC SC SC IS IS IS IS IS SC SC IS IS IS IS IS IS IS SC TSTMS O NM SC SC IS SC SC IS IS IS IS IS SC LAL 2 4 3 3 1 1 1 1 1 2 3 3 2 1 1 2 2 2 2 HAINES 2 3 3 3 3 3 2 2 3 4 4 4 4 3 2 2 3 4 4 4 MIX HGT 2 3 2 1 <1 <1 <1 1 3 5 4 3 2 <1 1 2 3 5 4 4 T WIND DIR S SW S S SW SW SW SW W W SW SW SW SW SW SW SW SW S S T WIND SPD 10 10 13 16 9 4 9 16 14 12 17 21 23 21 20 20 17 17 20 26 DISPERSION VP VP VP VP VP VP VP VP VP ADI 20 24 26 11 4 3 6 26 48 52 48 15 10 10 9 34 44 51 79 18 MAX LVORI 3 3 2 4 5 6 6 4 1 1 1 2 3 4 5 4 1 1 1 2 DATE Thu 05/23/13 Fri 05/24/13 Sat 05/25/13 Sun 05/26/13 UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 EDT 6HRLY 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 MIN/MAX TEMP 64 87 61 81 61 75 56 75 TEMP 69 69 83 78 67 66 79 74 65 64 73 69 61 61 72 70 DEWPT 63 64 63 62 59 59 62 61 57 55 53 54 49 49 51 54 RH 81 84 51 58 75 78 56 64 75 73 49 59 65 65 48 57 WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B1 B1 B1 B2 B2 B2 B1 B1 B2 B1 SC SC SC SC SC SC POP 12HR 30 50 50 30 30 20 10 10 RAIN SHWRS SC IS SC SC SC SC SC SC SC SC IS IS TSTMS SC SC SC 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