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

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FOUS54 KSJT 201903
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
203 PM CDT WED AUG 20 2014
TXZ170-211015- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 203 PM CDT WED AUG 20 2014 DATE 08/20/14 THU 08/21/14 FRI 08/22/14 SAT 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 73 94 73 95 71 TEMP 92 90 81 77 75 73 83 92 93 91 82 78 75 73 83 93 94 92 81 76 74 71 DEWPT 65 64 65 69 71 70 71 67 63 63 63 69 70 69 69 62 61 57 60 63 65 66 MAX/MIN RH 90 37 87 31 84 RH 41 43 57 76 85 90 67 44 37 40 54 75 84 87 63 36 34 32 49 64 75 84 WIND DIR S SE SE SE SE S S S S S SE S S S S S S S S S S S WIND SPD 10 9 10 8 8 5 12 14 12 12 9 10 9 9 10 12 11 10 10 9 7 4 CLOUDS SC SC SC SC B1 B2 B1 SC SC FW SC SC SC B1 SC FW FW FW FW FW FW SC CLOUDS(%) 50 44 45 45 58 71 53 34 29 23 29 35 47 58 41 23 17 11 15 18 22 26 POP 12HR 5 5 0 5 0 QPF 12HR 0 0 0 0 0 LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 5 5 3 3 5 3 4 4 4 5 4 4 4 5 4 4 5 MIX HGT 6 5 <1 <1 <1 <1 2 4 7 6 <1 <1 <1 <1 3 6 9 8 <1 <1 <1 <1 T WIND DIR S SE S S S S S S S S S S S S S S S S S S S S T WIND SPD 20 20 23 24 21 20 23 25 26 26 27 18 24 14 21 21 23 20 19 11 18 6 SMOKE DISP VG GD PR PR PR PR FR GD EX VG PR PR PR PR GD VG EX VG PR PR PR PR DATE 08/23 SUN 08/24/14 MON 08/25/14 TUE 08/26/14 WED 08/27/14 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 72 95 72 96 72 96 72 97 TEMP 93 92 77 72 93 92 77 72 94 93 77 72 94 93 77 72 95 94 DEWPT 60 59 64 66 60 58 64 68 60 59 63 66 59 56 59 63 62 60 MIN/MAX RH 31 81 30 87 30 81 28 73 30 RH 33 33 64 81 33 32 63 87 32 32 62 81 31 29 54 73 34 32 PWIND DIR S S S S S SE SE S SE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW POP 12HR 0 5 5 5 5 5 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 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... IS.............ISOLATED SC.............SCATTERED NM.............NUMEROUS O..............OCCASIONAL S..............SLIGHT CHANCE C..............CHANCE L..............LIKELY WD.............WIDESPREAD 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 HAINES(CAT).........................HAINES INDEX 10K WIND DIR(8 POINT COMPASS).......10000 FOOT WIND DIRECTION 10K WIND SPD(MPH)...................10000 FOOT WIND SPEED MIX HGT(THOUSANDS OF FT AGL)........MIXING HEIGHT EXAMPLE: 6 = 6000 FEET; 12 = 12000 FEET; <1 = LESS THAN 1000 FEET T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION T WIND SPD(MPH).....................TRANSPORT WIND SPEED SMOKE DISP(CAT(KT-FT))...................SMOKE DISPERSION CATEGORY EXAMPLE: PR = POOR; FR = FAIR; GD = GOOD; VG = VERY GOOD; EX = EXCELLENT FOSBERG.............................FOSBERG FIRE WEATHER INDEX 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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