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

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FOUS54 KSJT 010934
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
434 AM CDT WED APR 1 2015
TXZ170-012215- MASON RAWS-MASON TX 30.74N 99.19W ELEV. 1463 FT 434 AM CDT WED APR 1 2015 DATE WED 04/01/15 THU 04/02/15 FRI 04/03/15 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 64 89 66 82 TEMP 62 69 75 79 78 71 68 66 64 74 84 88 87 76 72 69 66 72 79 82 79 DEWPT 62 63 63 62 62 61 62 63 63 65 63 58 60 62 64 64 64 60 54 49 44 MIN/MAX RH 55 100 35 92 28 RH 100 81 65 56 58 71 81 90 97 74 49 36 39 61 76 84 92 67 42 32 28 WIND DIR S S S S S S S S S SW SW SW S S S S SW W N N N WIND SPD 5 7 11 12 11 8 10 8 9 10 11 10 11 10 10 10 8 8 9 17 15 CLOUDS B2 B2 B1 B1 B1 B1 B1 B2 B2 B1 SC FW FW SC SC SC B1 SC SC SC SC CLOUDS(%) 85 77 69 62 55 62 69 74 79 59 26 19 12 30 48 50 51 42 33 30 26 POP 12HR 30 10 5 10 20 QPF 12HR 0.08 0 0 0 0 RAIN SHWRS SC SC SC SC IS IS IS IS TSTMS SC SC SC SC LAL 3 3 3 3 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 6 3 3 3 4 3 3 5 6 6 6 5 5 6 6 6 6 6 6 5 5 MIX HGT <1 2 4 7 5 <1 <1 <1 <1 3 6 11 6 <1 <1 <1 <1 <1 6 4 4 T WIND DIR SW S S S S S S S SW SW SW SW S S S SW SW SW N N NE T WIND SPD 13 14 16 19 21 13 25 9 23 18 18 18 24 12 27 11 16 10 23 25 31 SMOKE DISP PR PR GD VG GD PR PR PR PR FR GD EX VG PR PR PR PR PR GD VG GD DATE SAT 04/04/15 SUN 04/05/15 MON 04/06/15 TUE 04/07/15 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 49 65 51 67 59 81 63 82 TEMP 57 49 62 64 54 51 64 66 61 59 76 79 67 63 78 80 DEWPT 38 34 30 33 40 44 51 55 60 59 62 61 64 62 63 60 MAX/MIN RH 56 29 81 60 100 51 97 49 RH 49 56 30 31 58 78 64 66 97100 62 54 88 97 59 50 PWIND DIR NE E SE SE S S S S WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC B1 B1 B1 B2 B2 B2 B2 B1 B1 SC SC SC B1 SC POP 12HR 10 10 30 30 20 20 10 20 RAIN SHWRS SC SC SC SC IS IS IS IS IS IS TSTMS SC SC SC SC IS IS IS IS 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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