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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Tue Sep 22 2026

VAZ046-230800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
401 PM EDT Tue Sep 22 2026

Date           09/22/26      Wed 09/23/26            Thu 09/24/26            Fri
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08

MIN/MAX TEMP                 56          61          52          64          48
TEMP          65 62 61 60 59 57 58 59 59 58 58 57 55 53 57 62 63 58 53 50 48 49
DEWPT         64 61 59 59 58 57 57 57 56 56 55 54 52 51 51 51 52 53 50 48 45 45
MIN/MAX RH                   97          88          92          66          91
RH            97 97 93 96 96100 96 93 90 93 90 90 90 93 80 67 67 83 89 93 89 86
WIND DIR      NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE NE  N  N  N  N
WIND SPD      13 13 13 12 14 14 13 13 13 13 12 12 14 13 13 13 12  8  6  6  8  8
WIND GUST     25 26 24 26 26 26 25 25 24 25 24 24 25 24 24       19 17         
CLOUDS        OV OV OV OV OV B2 OV OV OV B2 B2 OV OV B2 B2 B2 B2 SC SC FW FW FW
CLOUDS(%)     92 89 89 88 90 83 92 95 93 82 85 88 91 73 78 74 70 44 30 25  9  6
VSBY           4  4  3  4  4  3  4  8  8  7  8  6  6                           
POP 12HR                     90          70          50          10           0
RAIN              D  D  L  D  L  L  C  C  S  S  C  C                           
RAIN SHWRS     O                                                               
TSTMS         SC                                                               
MIX HGT        1  1 <1  1  1  1  2  2  2  1  1  2  2  1  2  3  3 <1            
T WIND DIR     N NE  N  N  N NE  N  N  N NE NE NE NE NE NE NE  N  N            
T WIND SPD    17 18 14 14 16 17 17 18 18 17 14 16 19 19 20 20 19 16            
DISPERSION       FR FR FR GD             FR FR FR GD             PR PR PR PR   
ADI           27 16 13 13 14 23 28 31 34 19 13 18 22 32 41 47 48 14            
MAX LVORI      4  5  5  5  5  5  4  4  4  5  5  5  5  4  4  3  3  4            
STABILITY      D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D  D            
CEILING               500   500   600   600   600   500   600  1400  None      
STA PRES            29.48 29.51 29.56 29.56 29.55 29.51 29.52 29.51            


Date           09/25Sat 09/26/26Sun 09/27/26Mon 09/28/26Tue 09/29/26
UTC 6hrly     18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MAX/MIN TEMP       71      49      73      51      75      52      76      53      78
TEMP          69 61 52 50 71 63 54 53 73 65 55 53 75 66 56 54 78 69
DEWPT         46 47 45 45 49 51 48 47 52 55 51 51 56 58 55 54 61 62
RH            44 60 77 83 46 65 80 80 48 70 86 93 52 75 96100 56 78
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW FW SC SC SC SC SC SC SC SC SC SC SC FW SC
POP 12HR            0       0       0       5       0       0       5       0       5

$$


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

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