Fire Weather Point Forecast Matrices
Mason RAWS
Issued by NWS San Angelo, TX

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624
FOUS54 KSJT 281921
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
221 PM CDT FRI AUG 28 2015
TXZ170-291015- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 221 PM CDT FRI AUG 28 2015 DATE 08/28/15 SAT 08/29/15 SUN 08/30/15 MON UTC 3HRLY 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 CDT 3HRLY 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 MIN/MAX 71 95 71 94 70 TEMP 98 95 85 77 74 71 82 92 95 93 84 78 74 71 80 90 94 91 82 76 73 70 DEWPT 53 51 54 55 59 60 60 56 55 55 57 59 61 61 63 58 58 57 61 61 63 64 MAX/MIN RH 69 26 71 30 81 RH 22 23 35 47 60 69 47 30 26 28 41 53 64 71 56 34 30 32 49 59 71 81 WIND DIR S S S S S SW SW S SE SE SE S S S SW S SE SE S S S S WIND SPD 6 8 4 4 4 4 8 5 5 6 4 5 4 5 4 3 5 6 5 5 6 4 CLOUDS FW FW FW SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC FW FW FW CLOUDS(%) 16 15 22 28 28 27 33 39 45 50 50 47 47 36 36 33 33 31 31 17 17 21 POP 12HR 0 10 5 5 0 QPF 12HR 0 0 0 0 0 LAL 1 1 1 1 1 1 1 1 1 1 HAINES 6 6 5 5 5 5 5 5 5 5 MIX HGT 5300 500 5700 8400 5300 500 7800 11500 6500 600 T WIND DIR S S S SE S S S SE SE S T WIND SPD 8 14 9 10 6 14 9 5 11 14 DATE 08/31 TUE 09/01/15 WED 09/02/15 THU 09/03/15 FRI 09/04/15 UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CDT 6HRLY 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 MAX/MIN 95 70 95 71 94 71 95 72 95 TEMP 91 92 77 70 91 92 78 71 91 91 77 71 91 92 78 72 91 92 DEWPT 61 56 61 66 61 57 65 67 64 60 65 68 63 60 64 67 62 59 MIN/MAX RH RH 37 30 59 86 37 31 66 87 42 36 67 90 40 34 63 84 38 33 PWIND DIR S S S S S S S S SE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS FW FW FW FW SC FW SC FW SC FW FW FW SC SC FW FW SC SC POP 12HR 0 0 0 0 0 0 5 5 5 $$ 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 HUMIDITY RH(%)...............................RELATIVE HUMIDITY WIND DIR(8 POINT COMPASS)...........20 FT. WIND DIRECTION WIND DIR DEG(DEGREES)...............20 FT. WIND DIRECTION IN TENS OF DEGREES RELATIVE TO DUE NORTH. EXAMPLE: 09 = 90 DEGREES = EAST; 18 = 180 DEGREES = SOUTH; 27 = 270 DEGREES = WEST; 36 = 360 DEGREES = NORTH WIND SPD(MPH).......................20 FT. WIND SPEED WIND GUST(MPH)......................20 FT. WIND GUST WIND CHILL..........................WIND CHILL TEMPERATURE HEAT INDX...........................HEAT INDEX CLOUDS(CAT).........................CLOUD COVER CATEGORY EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED; B1 = MOSTLY CLOUDY; B2 = CONSIDERABLE CLOUDS; OV = OVERCAST CLOUDS(%)...........................CLOUD COVER AS A PERCENTAGE POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION QPF 12HR(IN)........................LIQUID EQUIVALENT PRECIPITATION AMOUNT WEATHER... TYPE... RAIN...........RAIN RAIN SHWRS.....RAIN SHOWERS TSTMS..........THUNDERSTORMS DRIZZLE........DRIZZLE SNOW...........SNOW SNOWSHWRS......SNOW SHOWERS SLEET..........SLEET FLURRIES.......FLURRIES FRZG RAIN......FREEZING RAIN FRZG DRZL......FREEZING DRIZZLE COVERAGE... S..............SLIGHT CHANCE C..............CHANCE L..............LIKELY O..............OCCASIONAL D..............DEFINITE AR.............AREAS PA.............PATCHY OBVIS...............................OBSTRUCTION TO VISIBILITY TYPE... F..............FOG PF.............PATCHY FOG F+.............DENSE FOG H..............HAZE BS.............BLOWING SNOW K..............SMOKE BD.............BLOWING DUST AF.............VOLCANIC ASHFALL LAL(CAT)............................LIGHTNING ACTIVITY LEVEL MIX HGT(FT AGL).....................MIXING HEIGHT T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION T WIND SPD(MPH).....................TRANSPORT WIND SPEED ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX DISPERSION..........................LDSI MAX LVORI...........................LVORI STA PRES (INCHES MERCURY)...........STATION PRESSURE ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX CEILING (FT)........................CEILING STABILITY (CAT).....................PASQUILL TURNER STABILITY WATCH/WARNING/ADVISORY... EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH IN EFFECT FOR THE INDICATED HOUR 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).......................20 FT. 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

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