National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
200 PM EST Sat Nov 27 2021

NCZ003-272100-
RAWS 310301
36.48N  80.86W Elev. 1300 ft
200 PM EST Sat Nov 27 2021

Date             Sat 11/27/21            Sun 11/28/21            Mon 11/29/21
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                 53          34          56          27          48
TEMP                      51 42 40 38 34 36 49 56 55 44 39 36 32 29 39 45 46 39
DEWPT                     16 17 18 19 21 24 31 32 32 33 29 24 19 16 18 14 15 19
MAX/MIN RH                   23          63          40          69          27
RH                        24 36 41 46 58 61 50 40 41 65 67 61 58 58 42 28 28 44
WIND DIR                   S NW NW NW NW  W  W  W  W NW NW NW NW NW NW NW NW NW
WIND SPD                   3  1  1  1  1  1  2  5  5  2  5  6  6  5  5  5  4  1
WIND GUST                                                     17    16         
CLOUDS                    FW FW SC SC SC SC SC SC SC SC FW SC FW FW FW FW FW FW
CLOUDS(%)                 20 17 36 39 33 26 40 37 46 35 20 39 25  8 11 15  8 12
VSBY                       7  7  7  7  7  7  7  7  7  7  7  7  7  7  7  7  7  7
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   
HAINES                     3  4  5  5  4  4  4  5  4  4  4  2  2  3  3  3  4  4
MIX HGT                    3 <1 <1 <1 <1 <1  1  3  3  1  2  3  3  3  3  4  3  2
T WIND DIR                SW  S SW NW NW  W NW  W  W NW NW NW NW NW  N NW NW NW
T WIND SPD                 9  8  8  1  1  1 11 14 12 14 21 23 21 21 23 17 13 13
DISPERSION                   VP VP VP VP             VP PR PR PR             VP
ADI                       38  4  4  1  1  1 22 44 42  6 10 10 10 64 76 65 48  6
MAX LVORI                  1  2  2  2  3  3  2  1  1  3  3  2  2  1  1  1  1  2
STABILITY                  B  G  G  G  G  B  B  C  C  G  F  F  F  C  C  C  C  G
CEILING                    None  None  None  None  None  None  None  None  None
STA PRES                  28.08 28.04  28.0 27.99 27.95 28.00 28.05 28.13 28.10


Date          Tue 11/30/21 Wed 12/01/21 Thu 12/02/21 Fri 12/03/21
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       28      59      34      60      39      64      43      67
TEMP          33 31 56 45 38 37 58 47 43 42 62 52 47 47 65 54
DEWPT         18 19 32 35 33 32 36 37 36 36 41 43 42 41 44 43
RH            53 61 40 68 82 82 44 68 76 79 46 71 83 79 46 66
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC FW CL FW SC SC FW SC SC FW FW FW FW FW FW
POP 12HR            0       0       0       0       5       0       5      10

$$


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