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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
527 AM EST Thu Dec 2 2021

NCZ006-022100-
RAWS 310801
36.37N  79.29W Elev. 580 ft
527 AM EST Thu Dec 2 2021

Date             Thu 12/02/21            Fri 12/03/21            Sat 12/04/21
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EST 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 TEMP                 69          46          70          46          67
TEMP             44 59 67 67 60 57 54 50 46 58 67 67 56 53 50 48 46 58 64 64 53
DEWPT            39 41 41 43 43 41 41 40 39 34 33 36 39 42 44 43 43 46 40 39 35
MAX/MIN RH                   39          75          26          89          36
RH               82 51 39 42 53 55 61 68 76 40 28 32 53 66 80 83 89 64 41 40 50
WIND DIR         SW SW SW SW  W  W  W  W  W NW  W SW  S  S  S SW SW  W  N  N  N
WIND SPD          4  9 13 13 10  9  8  6  5  8  8  5  4  3  3  3  3  4  6  5  3
WIND GUST              25 24                                                   
CLOUDS           CL SC SC FW FW FW CL FW FW CL CL CL CL CL FW SC SC SC SC SC SC
CLOUDS(%)         0 30 28 19 17  9  3 14  6  1  4  1  2  5 21 31 34 33 35 33 34
VSBY             10 10 10 10 10 10 10 10 10 10 10 10 10                        
POP 12HR                      0           0           0           0           0
LAL               1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1   
HAINES            3  4  4  4  4  4  4  4  4  4  4  4  4  3  3  4  4  4  4  3  4
MIX HGT          <1  1  3  3 <1 <1 <1 <1 <1  2  3  3 <1 <1 <1 <1 <1  1  2  3 <1
T WIND DIR       SW  W  W  W  W  W  W  W  W NW NW  W  S  S  S SW SW  W NW NW  N
T WIND SPD        4 23 23 25 10  9  8  6  5 13 13  5  4  3  3  3  3 16 10 10  4
DISPERSION                   FR PR PR PR             VP VP VP VP             VP
ADI               4 42 52 58  7  6  5  3  4 32 43 18  2  1  2  2  3 23 29 31  2
MAX LVORI         5  1  1  1  2  3  3  3  4  1  1  2  2  3  4  5  6  2  2  1  2
STABILITY         C  C  D  D  E  E  E  F  C  C  C  C  F  G  G  G  B  C  C  C  G
CEILING              None  None  None  None  None  None  None  None  None  None
STA PRES            29.33 29.26 29.29 29.39 29.46 29.41 29.40 29.40 29.44 29.50


Date          Sun 12/05/21 Mon 12/06/21 Tue 12/07/21 Wed 12/08/21
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly     01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19

MIN/MAX TEMP       37      57      44      62      28      49      34      56
TEMP          43 37 55 48 47 47 60 43 33 28 46 41 36 39 53 46
DEWPT         31 28 32 41 44 46 45 25 19 18 16 20 23 33 42 39
RH            62 70 41 77 89 96 58 49 56 66 29 42 59 79 66 76
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC SC B1 B2 B2 B1 SC FW SC SC SC SC B1 B1 B1
POP 12HR            0       0      20      30       5       5      20      40
RAIN SHWRS                   IS SC IS                IS SC SC

$$


This product is for planning and review purposes only and is not
to be substituted for an official fire weather spot forecast. The
data displayed are calculated from a 2.5 by 2.5 km digital
database and only approximates weather conditions in highly
varying terrain. Please relay any comments you have to the NWS via
email at rnk.webmaster@noaa.gov.

Below is a weather element key for this product.
(Note...winds do not reflect local terrain effects.)

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 humdity
RH(%)...............................Relative humidity
WIND DIR(8 POINT COMPASS)...........Wind direction
WIND SPD(MPH).......................Wind speed
CLOUDS(CATEGORY)....................Cloud cover category
     EXAMPLE: CL = CLEAR; FW = FEW; SC = Scattered; BK = Broken; OV = Overcast
CLOUDS(%)...........................Cloud cover as a percentage
VSBY................................Visibility value in statute miles
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER...
   TYPE...
       RAIN...........Rain
       RAIN SHWRS.....Rain showers
       TSTMS..........Thunderstorms
       DRIZZLE........Drizzle
       SNOW...........Snow
       SNOWSHWRS......Snow showers
       SLEET..........Sleet
       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
LAL(CATEGORY).......................Lightning Activity Level
HAINES(CATEGORY)....................Haines Index
MIX HGT(THOUSANDS OF FT AGL)........Mixing height
     Example: 6 = 6000 feet; 12 = 12000 feet; <1 = Less than 1000 foot
t WIND DIR(8 POINT COMPASS).........Transport Wind direction
T WIND SPD(MPH).....................Transport Wind speed
DISPERSION(CATEGORY)................Smoke Dispersion category
     Values: vp =Very Poor;PR = Poor; FR = Fair; GD = Good;
ADI (INDEX).........................Atmospheric Dispersion Index
MAX LVORI (INDEX)...................Low Visibility Occurrence Risk Index
STABILITY (CATEGORY)................Pasquill Turner Stability
CEILING (FT)........................Ceiling
STA PRES (INCHES MERCURY)...........Station pressure

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).......................Wind Speed
     Example: <15 = less than 15 MPH; 15> = 15 MPH or greater
AVE CLOUDS(CATEGORY)................Average Cloud Cover Category
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER.............................See Day 1 through 3 weather descriptions