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

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948
FOUS54 KSJT 212117
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
317 PM CST WED JAN 21 2015
TXZ128-221015- HAMBY RAWS-CALLAHAN TX 32.50N 99.62W ELEV. 1900 FT 317 PM CST WED JAN 21 2015 DATE 01/21/15 THU 01/22/15 FRI 01/23/15 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 CST 3HRLY 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 MIN/MAX 34 37 27 47 30 TEMP 49 41 37 35 35 35 36 37 35 31 29 28 27 31 42 47 43 36 33 31 31 DEWPT 40 40 37 35 35 34 34 35 35 31 29 28 27 30 30 31 29 29 28 27 25 MAX/MIN RH 100 92 100 51 85 RH 71 96 99100100 96 92 92100100100100100 97 62 52 57 75 82 85 78 WIND DIR E NE NE N NE NE NE NE NE N N N N NW NW NW NW W W W NW WIND SPD 10 10 14 16 17 17 16 16 14 11 11 10 8 8 8 8 5 7 9 7 7 CLOUDS OV OV OV OV OV OV OV OV OV OV OV OV B2 B2 SC SC FW FW FW FW SC CLOUDS(%) 99 99100100100100100100100100100100 86 86 28 28 14 14 14 14 26 POP 12HR 100 80 60 30 5 QPF 12HR 0.78 0.10 0.13 0.02 0 RAIN D D D D D D D D L L S S SNOW D D D D D D L L L L C C LAL 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 HAINES 2 2 2 2 2 2 2 2 2 2 2 2 2 3 4 3 4 3 4 5 5 MIX HGT 2 1 1 1 1 2 2 3 2 1 1 <1 <1 1 4 4 1 <1 <1 <1 <1 T WIND DIR E E NE NE NE NE NE NE NE NE N N N NW NW W W W W W NW T WIND SPD 18 19 21 26 28 28 28 27 24 23 18 18 13 12 13 12 8 8 9 9 9 SMOKE DISP PR PR PR PR PR FR FR GD FR PR PR PR PR PR FR FR PR PR PR PR PR WINTER STORM A A A A A A A DATE 01/24/15 SUN 01/25/15 MON 01/26/15 TUE 01/27/15 WED 01/28/15 UTC 6HRLY 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 CST 6HRLY 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 MAX/MIN 56 35 62 37 64 39 65 42 63 TEMP 50 51 39 36 56 57 41 38 58 59 43 40 59 60 46 43 58 58 DEWPT 31 32 30 25 31 33 32 31 35 37 36 34 38 37 38 37 40 38 MIN/MAX RH 38 72 32 82 35 86 36 86 41 RH 48 48 70 64 38 40 69 76 42 44 74 78 45 42 73 79 52 48 PWIND DIR NW W W W NW NW SW SW SW WIND CHAR <15 <15 <15 <15 <15 <15 <15 <15 <15 AVG CLOUDS SC SC SC SC FW FW FW FW FW FW FW FW FW FW FW FW FW FW POP 12HR 5 5 0 0 0 5 0 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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