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

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966
FOUS54 KSJT 251935
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
235 PM CDT SUN SEP 25 2016<br>

TXZ128-261015-
HAMBY RAWS-CALLAHAN TX
32.50N  99.62W ELEV. 1900 FT
235 PM CDT SUN SEP 25 2016

DATE           09/25/16      MON 09/26/16            TUE 09/27/16            WED
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                      58          66          54          74          56
TEMP          74 71 64 61 59 58 61 65 66 64 58 56 55 54 62 71 74 70 63 60 58 56
DEWPT         66 65 64 61 59 56 54 52 54 52 51 50 50 50 49 45 48 50 48 49 49 50
MAX/MIN RH                  100          63          85          39          81
RH            76 81100100100 93 78 63 65 65 77 80 83 85 62 40 40 49 59 68 73 81
WIND DIR       N NE  N  N  N  N NE NE  N  N  N  N  N  N  N  N  N  N  S SW SW  W
WIND SPD      10 10 12 11 11 12 11 12 11  9  4  3  3  5  3  4  3  3  3  3  3  3
CLOUDS        OV OV OV OV OV OV OV OV OV OV OV B2 B2 B2 B2 B1 B1 SC SC SC SC SC
CLOUDS(%)     98 99100 99 99 98 96 94 92 90 88 84 77 70 70 53 53 40 40 33 33 29
POP 12HR                     70          30          20          10           5
QPF 12HR                   0.42        0.04        0.02           0           0
RAIN SHWRS     D  C  C  C  C  C  C  C  C  S  S  S  S
TSTMS          D  C  C  C  C  C  C  C  C  S  S  S  S
LAL                     4     4     3     3     2     2     1     1     1     1
HAINES                  3     3     3     3     3     4     4     4     4     4
MIX HGT              1700   500  2000  3000  1400   600  3000  3700  1900   200
T WIND DIR             NE    NE    NE    NE     N     N    NW     N    SW     W
T WIND SPD             23    28    23    18     8     4     5     5     3     5
SMOKE DISP             PR    PR    PR    FR    PR    PR    PR    PR    PR    PR


DATE           09/28 THU 09/29/16 FRI 09/30/16 SAT 10/01/16 SUN 10/02/16
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            80      59      81      58      80      59      82      61      83
TEMP          76 76 63 59 77 76 63 58 76 73 63 59 78 75 65 61 79 77
DEWPT         50 58 55 54 58 57 56 54 58 57 56 54 58 57 56 56 60 59
MIN/MAX RH
RH            40 54 73 82 52 52 78 86 54 57 77 83 51 54 73 85 53 54
PWIND DIR           W       E       E       E      SE      SE       S      SE       S
WIND CHAR         <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC FW FW FW FW FW FW SC SC FW SC SC SC FW FW FW FW
POP 12HR            5       0       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 DIR DEG(DEGREES)...............20 FT. WIND DIRECTION IN TENS OF DEGREES
                                    RELATIVE TO DUE NORTH.
     EXAMPLE: 09 = 90 DEGREES = EAST; 18 = 180 DEGREES = SOUTH;
              27 = 270 DEGREES = WEST; 36 = 360 DEGREES = NORTH
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...
       S..............SLIGHT CHANCE
       C..............CHANCE
       L..............LIKELY
       O..............OCCASIONAL
       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
MIX HGT(FT AGL).....................MIXING HEIGHT
T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION
T WIND SPD(MPH).....................TRANSPORT WIND SPEED
ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX
DISPERSION..........................LDSI
MAX LVORI...........................LVORI
STA PRES (INCHES MERCURY)...........STATION PRESSURE
ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX
CEILING (FT)........................CEILING
STABILITY (CAT).....................PASQUILL TURNER STABILITY
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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