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The Laredo Point Forecast Matrix

27.54N  99.46W ELEV. 472 FT
318 AM CDT THU OCT 3 2013

DATE             THU 10/03/13            FRI 10/04/13            SAT 10/05/13
CDT 3HRLY     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
UTC 3HRLY     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00

MAX/MIN                      95          73          95          75          92
TEMP          76 75 82 90 94 91 82 78 75 73 81 90 95 92 83 80 76 75 81 88 92 89
DEWPT         72 72 72 69 67 67 70 71 72 71 72 69 65 63 65 70 71 72 72 71 68 67
RH            87 90 72 50 41 45 67 79 90 93 74 50 37 38 55 72 85 90 74 57 46 48
WIND DIR      SE SE SE SE SE SE SE SE SE SE SE  S SE SE SE SE SE SE SE SE  E  E
WIND SPD      11  9 10 12 12 12 16 13 10 10 10 12 11 12 13 13 11  9 11  8 10 11
CLOUDS        SC B1 B1 SC SC FW FW FW SC SC SC FW FW FW FW FW SC SC SC SC SC B1
POP 12HR                      5           5           5           5          20
QPF 12HR                      0           0           0           0        0.01
RAIN SHWRS                                                              S  S  C
TSTMS                                                                   S  S  S
HEAT INDEX          87 95 98 95 86          86 95 97    85          85 94 96 92
MAX HEAT               95    98    91          95    97    89          94    96


DATE          SUN 10/06/13  MON 10/07/13  TUE 10/08/13  WED 10/09/13
CDT 6HRLY     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19
UTC 6HRLY     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00

MIN/MAX          64    78      61    87      62    91      68    92
TEMP          79 64 77 72   64 61 81 83   68 62 85 88   74 68 87 89
DEWPT         64 51 45 46   44 42 41 47   51 55 61 61   64 63 64 62
PWIND DIR         E     N      NW     E      SE    SE      SE    SE
WIND CHAR        GN    GN      LT    LT      LT    GN      GN    GN
AVG CLOUDS    B1 B2 B2 B1   SC SC FW CL   CL CL CL FW   FW FW SC SC
POP 12HR         50    30       0     0       0     0       5     5
RAIN SHWRS     C  C  C
TSTMS          S  S


THE TABLE OF CODES BELOW DESCRIBE THE PFM PRODUCT:

THE FOLLOWING PARAMETERS APPEAR DAILY...
MAX/MIN    = DAYTIME HIGH AND NIGHTTIME LOW TEMPERATURE
TEMP       = TEMPERATURE AT 3 HOURLY INTERVALS
DEWPT      = DEWPOINT AT 3 HOURLY INTERVALS
RH         = RELATIVE HUMIDITY AT 3 HOURLY INTERVALS
WIND DIR   = WIND DIRECTION AT 3 HOURLY INTERVALS
WIND SPD   = WIND SPEED IN MPH AT 3 HOURLY INTERVALS
CLOUDS     = CLOUD COVER AT 3 HOURLY INTERVALS
  CL = CLEAR SKIES (0-5% CLOUD COVER)
  FW = MOSTLY CLEAR SKIES (6-25% CLOUD COVER)
  SC = PARTLY CLOUDY SKIES (26-50% CLOUD COVER)
  B1 = MOSTLY CLOUDY SKIES (51-69% CLOUD COVER)
  B2 = MOSTLY CLOUDY SKIES (70-87% CLOUD COVER)
  OV = CLOUDY SKIES (88-100% CLOUD COVER)
POP 12HR   = PROBABILITY OF PRECIPITATION FOR DAY AND NIGHT
QPF 12HR   = PRECIPITATION AMOUNT IN INCHES FOR DAY AND NIGHT

THE FOLLOWING PARAMETERS APPEAR AS NEEDED...
WIND GUST  = WIND GUST IN MPH AT 3 HOURLY INTERVALS
MAX QPF    = MAXIMUM AMOUNT OF PRECIPITATION OCCURRING AT ANY ONE LOCATION
SNOW 12HR  = SNOWFALL AMOUNT IN INCHES FOR DAY AND NIGHT
WIND CHILL = HOW IT FEELS BASED ON TEMPERATURE AND WIND EACH 3 HOURS
MIN CHILL  = LOWEST WIND CHILL OVER LAST 6 HOUR PERIOD
HEAT INDEX = HOW IT FEELS BASED ON TEMPERATURE AND RH EACH 3 HOURS
MAX HEAT   = HIGHEST HEAT INDEX OVER LAST 6 HOUR PERIOD
RAIN       = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS RAIN
RAIN SHWRS = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS RAIN SHOWERS
SPRINKLES  = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS SPRINKLES
TSTMS      = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS THUNDERSTORMS
DRIZZLE    = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS DRIZZLE
SNOW       = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS SNOW
SNOWSHWRS  = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS SNOW SHOWERS
FLURRIES   = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS FLURRIES
SLEET      = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS ICE PELLETS
FRZG RAIN  = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS FREEZING RAIN
FRZG DRZL  = PRECIPITATION TYPE FOR EACH 3 HOUR PERIOD IS FREEZING DRIZZLE

EACH PRECIPITATION PARAMETER IS CLASSIFIED AS FOLLOWS...
  IS = ISOLATED (10-20% COVERAGE)
   S = SLIGHT (10-20% PROBABILITY)
  SC = SCATTERED (30-50% COVERAGE)
   C = CHANCE (30-50% PROBABILITY)
  NM = NUMEROUS (60-70% COVERAGE)
   L = LIKELY (60-70% PROBABILITY)
   O = OCCASIONAL (80-100% PROBABILITY)
   D = DEFINITE (80-100% PROBABILITY)
   EC = EXTENSIVE COVERAGE (80-100% PROBABILITY)
   PA = PATCHY (<25% COVERAGE)
   AR = AREAS (25-50% COVERAGE)
   WD = WIDESPREAD (>50% COVERAGE)

OBSTRUCTIONS TO VISIBILITY (OBVIS) ARE CLASSIFIED AS FOLLOWS...
   F = FOG
  PF = PATCHY FOG
  F+ = DENSE FOG
 PF+ = PATCHY DENSE FOG
   H = HAZE
  BS = BLOWING SNOW
  BD = BLOWING DUST
  AF = VOLCANIC ASH
   K = SMOKE

ADDITIONAL EXTENDED FORECAST PARAMETERS ARE CLASSIFIED AS FOLLOWS...
PWIND DIR  = PRIMARY WIND DIRECTION FOR EACH 12 HOUR PERIOD
WIND CHAR  = WIND CHARACTERISTIC FOR EACH 12 HOUR PERIOD
  LT = LIGHT  (< 8 MPH)
  GN = GENTLE (8-14 MPH)
  BZ = BREEZY (15-22 MPH)
  WY = WINDY  (23-30 MPH)
  VW = VERY WINDY (31-39 MPH)
  SD = STRONG (>40 MPH)

AVG CLOUDS = AVERAGE CLOUD COVER FOR EACH 12 HOUR PERIOD

MM = MISSING DATA

IF A HURRICANE IS EXPECTED THEN THE FOLLOWING APPLIES...
0-24 HOURS BEFORE LANDFALL...THE ACTUAL WIND SPEEDS WILL BE USED.
25-60 HOURS BEFORE LANDFALL...THE CODE "HU" WILL BE USED FOR WINDS
                              AND "HG" FOR WIND GUSTS.
61-120 HOURS BEFORE LANDFALL...THE CODE "HU" WILL ONLY BE USED.