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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sun May 17 2026

NCZ006-180800-
RAWS 310801
36.37N  79.29W Elev. 580 ft
401 PM EDT Sun May 17 2026

Date           05/17/26      Mon 05/18/26            Tue 05/19/26            Wed
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                 66          94          65          95          66
TEMP          91 83 73 70 67 72 84 92 92 85 76 72 67 70 84 93 93 86 76 72 68 71
DEWPT         61 63 62 62 64 66 67 63 60 61 61 62 62 63 63 58 56 58 58 60 61 63
MIN/MAX RH                   92          35          86          28          83
RH            37 51 68 76 90 81 57 38 34 45 60 71 84 78 49 31 29 39 54 66 78 76
WIND DIR       S  S  S  S SW SW SW SW  S  S  S  S SW SW SW SW  S  S  S  S SW SW
WIND SPD       5  2  2  3  3  3  4  6  6  3  3  4  3  4  4  6  8  3  4  4  4  5
WIND GUST                                                              14      
CLOUDS        CL FW FW FW CL CL CL FW CL FW FW FW FW FW FW FW FW SC FW FW FW FW
CLOUDS(%)      5 12  8  7  4  3  3  8  4 10 15 16 21 19 15 11 15 28 25 16  9 14
VSBY          10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                      0           0           0           0           0
MIX HGT        7 <1 <1 <1 <1  1  4  6  7 <1 <1 <1 <1  1  3  6  8 <1            
T WIND DIR    SW  S  S  S  S SW SW SW SW  S SW SW  S SW  W  W SW  S            
T WIND SPD     8  5  4  4  4  8 11 11 12  6  6  5  5 10 11 12 13  5            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI           69  3  2  2  2 11 54 80 94  3  3  3  3 16 51 88114  3            
MAX LVORI      1  2  3  4  6  5  1  1  1  2  3  3  5  3  1  1  1  2            
STABILITY      A  G  G  G  G  A  A  B  B  G  G  F  G  A  A  B  B  G            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            29.50 29.57 29.61 29.55 29.58 29.59 29.59 29.50            


Date           05/20Thu 05/21/26Fri 05/22/26Sat 05/23/26Sun 05/24/26
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       96      65      79      56      72      58      80      63      84
TEMP          94 87 71 67 77 71 61 57 68 70 62 60 77 75 66 65 81 77
DEWPT         58 63 65 65 61 59 58 57 60 62 60 60 66 67 65 65 68 69
RH            30 45 81 93 58 66 90100 76 76 93100 69 76 97100 65 76
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC B1 B1 B1 B2 B2 B2 B2 B2 OV B2 B2 B2 B2 B2 B2 B2
POP 12HR           20      40      70      80      70      60      60      60      70
RAIN SHWRS       IS SC SC SC NM  O NM NM NM NM SC SC NM NM SC SC NM
TSTMS            IS SC       SC SC       IS IS       SC IS       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

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