National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
311 AM EST Sun Nov 29 2020

NCZ001-292100-
RAWS 310142
36.40N  81.46W Elev. 4608 ft
311 AM EST Sun Nov 29 2020

Date             Sun 11/29/20            Mon 11/30/20            Tue 12/01/20
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                 47          42          45          22          25
TEMP          39 38 43 46 46 43 42 42 44 45 44 40 35 35 32 30 28 22 23 24 24 22
DEWPT         30 31 34 35 35 36 38 40 42 43 42 37 31 27 25 22 20 17 15 15 15 14
MAX/MIN RH                   65          93          73          86          67
RH            70 76 70 65 65 76 86 93 93 93 93 89 85 72 75 72 71 81 71 68 68 71
WIND DIR      SW  S  S  S  S  S SE SE SE  S  W  W  W NW NW NW NW  W  W  W  W  W
WIND SPD       4  4  6  9  8  8  8 11 11 10 16 16 18 19 19 19 21 23 21 20 20 20
WIND GUST                 19 20    27 25 25 27 28 32 35 35 35 39 41 39 36 36 35
CLOUDS        FW SC B1 B2 B2 OV OV OV OV B2 B2 B2 B1 B2 B2 B2 B2 B2 B1 B1 SC SC
CLOUDS(%)     13 27 56 78 83 91100100100 81 75 72 66 75 81 79 77 73 65 57 45 45
VSBY           7  7  7  7  7  7  7  3  3  3  3  7  7  4                        
POP 12HR                     10         100          60          40          20
RAIN                             D  D                                          
RAIN SHWRS                   IS        O NM NM SC SC SC                        
SNOWSHWRS                                            SC SC SC SC IS IS IS IS   
LAL            1  1  1  1  1  1  1  1  1  1  1  1  1                           
HAINES         4  4  3  3  2  2  3  3  2  3  3  2  2  2                        
MIX HGT       <1 <1 <1  1  2 <1 <1 <1 <1 <1  1  2  2  2                        
T WIND DIR    SW  S SW  S  S  S  S SE  S  S  W  W NW NW                        
T WIND SPD     4  4  8 20 28 25 19 46 33 14 42 40 34 29                        
DISPERSION    VP             PR PR FR FR             GD GD GD GD             GD
ADI            2  3  6 29 49 17 17 41 29 17 55 68 62 33                        
MAX LVORI      3  4  3  3  1  3  4  4  4  5  4  4  4  3                        
STABILITY      F  C  C  D  D  E  D  D  D  D  D  D  D  D                        
CEILING             24800  9300   300   100   700   700   800                  
STA PRES            26.77 26.72 26.62 26.41 26.32 26.33                        


Date          Wed 12/02/20 Thu 12/03/20 Fri 12/04/20 Sat 12/05/20
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       17      36      25      42      31      41      33      40
TEMP          21 20 34 32 29 26 40 38 35 31 39 37 35 33 39 34
DEWPT         13 10 13 14 13 14 23 25 23 25 31 31 30 29 29 25
RH            71 64 41 47 51 60 50 59 61 78 73 79 82 85 67 69
WIND SPD          15>     15>     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC SC FW CL FW SC SC B1 B2 B2 B1 B1 B2 B1 B1 SC
POP 12HR            0       5       5      10      20      30      30      20
RAIN                                   S  S  C  C  C  S  S  S
SNOW                                      S  C        S  S   

$$


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