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

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480
FOUS54 KSJT 292021
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
321 PM CDT WED OCT 29 2014
TXZ170-301015- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 321 PM CDT WED OCT 29 2014 DATE 10/29/14 THU 10/30/14 FRI 10/31/14 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 57 78 52 73 41 TEMP 75 70 63 60 58 57 67 76 78 71 60 57 54 53 62 71 73 64 51 47 44 42 DEWPT 58 57 56 60 57 54 56 58 58 58 60 57 54 48 46 40 39 38 38 38 38 38 MAX/MIN RH 100 50 100 29 89 RH 55 63 78100 95 90 69 54 51 63100100100 85 57 32 30 38 61 72 82 87 WIND DIR NE E E SE SE SE S S SE NE E NE NE NE NE NE N NE NE NE E E WIND SPD 3 3 3 3 3 3 3 3 3 3 2 3 9 7 10 10 10 5 3 3 3 3 CLOUDS SC SC SC SC B1 B2 B1 B1 SC SC SC B1 B1 B1 SC SC FW FW FW FW FW SC CLOUDS(%) 49 44 46 47 63 78 67 55 47 39 50 61 66 59 43 26 24 21 21 20 24 27 POP 12HR 5 10 20 5 0 QPF 12HR 0 0 0.03 0 0 RAIN SHWRS IS IS IS IS TSTMS IS IS IS IS LAL 1 1 1 1 1 1 1 1 1 2 2 2 2 1 1 1 1 1 1 1 1 1 HAINES 3 3 3 3 3 3 3 3 3 3 3 3 3 3 5 5 3 3 4 4 4 4 MIX HGT 5 3 1 <1 <1 <1 2 4 5 3 <1 <1 <1 <1 2 4 6 3 <1 <1 <1 <1 T WIND DIR E SE SE SW SE SE S SW NW E SE NE NE N NE NE N N NE NE NE NE T WIND SPD 5 8 3 1 11 3 8 4 4 6 4 5 19 8 18 19 16 6 6 5 5 4 SMOKE DISP PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR GD GD PR PR PR PR PR DATE 11/01 SUN 11/02/14 MON 11/03/14 TUE 11/04/14 WED 11/05/14 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 68 52 71 61 77 60 72 53 70 TEMP 65 64 55 52 69 68 63 61 75 72 63 60 71 67 56 53 68 64 DEWPT 38 40 44 51 55 56 59 60 61 61 63 60 58 54 50 47 46 45 MIN/MAX RH 34 100 57 97 58 100 57 83 41 RH 37 42 67 97 61 65 86 97 62 68 100100 63 64 79 82 45 50 PWIND DIR SE SE S S S S E NE NE WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS FW FW SC B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 POP 12HR 0 5 5 10 20 30 50 40 20 RAIN SHWRS IS IS SC SC SC SC SC SC IS IS TSTMS IS IS 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 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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