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

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961
FOUS54 KSJT 230937
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
437 AM CDT SAT MAY 23 2015
TXZ170-232215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 437 AM CDT SAT MAY 23 2015 DATE SAT 05/23/15 SUN 05/24/15 MON 05/25/15 UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 CDT 3HRLY 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 MAX/MIN 79 65 82 68 82 TEMP 68 70 74 79 78 70 68 66 65 68 75 82 81 73 71 69 68 70 76 82 80 DEWPT 68 68 67 68 68 67 65 66 65 66 67 66 66 67 66 67 67 69 69 68 68 MIN/MAX RH 68 100 58 98 63 RH 100 93 78 68 71 88 89 99100 92 75 58 61 80 84 93 97 97 79 63 66 WIND DIR SE SE S S SE S S S S S S S S S S S S S S S SE WIND SPD 9 11 12 10 9 9 10 9 8 9 10 11 9 7 8 8 7 9 10 10 8 CLOUDS OV OV OV OV OV OV OV OV B2 B2 B2 B1 SC SC B1 B1 B2 B2 B1 B1 B2 CLOUDS(%) 88 89 89 89 89 90 91 89 86 83 73 57 43 43 51 51 70 70 59 59 77 POP 12HR 70 90 50 20 50 QPF 12HR 0.49 1.10 0.19 0.01 0.10 RAIN SHWRS NM NM NM NM O O O O SC SC SC SC IS IS IS IS SC SC SC SC SC TSTMS NM NM NM NM O O O O SC SC SC SC IS IS IS IS SC SC SC SC SC LAL 4 4 4 4 5 5 5 5 3 3 3 3 2 2 2 2 3 3 3 3 3 HAINES 3 3 3 3 3 3 3 3 3 4 3 4 4 3 3 3 4 3 3 3 4 MIX HGT <1 2 4 3 3 2 1 1 1 3 5 6 7 4 <1 <1 <1 2 4 4 4 T WIND DIR S S S S SE S S S S S SW SW S S S S S S S S S T WIND SPD 25 26 27 24 12 17 18 23 11 20 25 24 20 17 23 17 21 18 33 25 24 SMOKE DISP PR FR GD GD PR PR PR PR PR FR VG VG VG GD PR PR PR PR VG GD GD FLASH FLOOD A A A A A A A A DATE TUE 05/26/15 WED 05/27/15 THU 05/28/15 FRI 05/29/15 UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CDT 6HRLY 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 MIN/MAX 67 86 69 86 69 83 69 82 TEMP 70 67 78 84 73 69 79 84 72 69 77 81 72 69 76 80 DEWPT 66 65 68 66 69 69 70 68 69 68 69 67 69 68 68 67 MAX/MIN RH 97 53 100 57 98 61 98 60 RH 87 93 70 55 88100 74 59 89 97 76 63 91 98 75 64 PWIND DIR S S SE S SE SE SE S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS B2 B2 B1 SC SC SC B1 SC SC B1 B1 B1 B1 B2 B2 B1 POP 12HR 50 30 10 30 30 30 20 30 RAIN SHWRS SC SC SC SC SC SC SC SC SC SC IS IS SC SC TSTMS SC SC SC SC SC SC SC SC SC SC IS IS SC SC $$ 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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