National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Sat May 16 2026

VAZ024-170800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
231 PM EDT Sat May 16 2026

Date           05/16/26      Sun 05/17/26            Mon 05/18/26            Tue
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                 59          91          62          93          65
TEMP          84 76 69 64 61 63 82 89 89 81 72 67 64 66 85 91 92 85 75 69 65 68
DEWPT         60 60 58 57 57 59 63 61 63 64 61 60 59 61 65 63 62 61 60 59 59 60
MIN/MAX RH                   88          39          86          37          82
RH            44 58 68 78 87 87 53 39 42 56 68 78 84 84 51 40 37 45 60 70 81 76
WIND DIR      SW SW  W  W  W  W  W SW SW  S  N  N  N  N  S  S  S  S  S SW SW  N
WIND SPD       5  2  1  1  1  1  1  3  3  1  0  0  0  0  2  6  6  3  2  2  1  0
WIND GUST                                                     18               
CLOUDS        B1 B2 B1 SC B1 SC FW FW FW FW FW FW FW FW CL CL FW FW FW SC SC FW
CLOUDS(%)     63 80 56 45 54 45 12  9 18  8  9  8 13 22  3  5  7 12 13 26 27 22
VSBY          10 10  9 10 10 10 10 10 10 10 10 10  6 10 10 10 10  9            
POP 12HR                     20           5           0           0           0
RAIN SHWRS       IS                                                            
MIX HGT        5 <1 <1 <1 <1 <1  3  6  7 <1 <1 <1 <1 <1  3  6  7 <1            
T WIND DIR    SW  S  W NW NW NW  W SW  S  S  S SW SW  W  W  S  S  S            
T WIND SPD    16  6  4  3  3  2  2  6 10  5  4  4  1  2  2  6 12  6            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI           67  3  2  2  2  2  9 54 82  3  2  2  1  2  9 47 96  3            
MAX LVORI      1  3  3  4  6  5  2  1  1  3  3  4  6  5  2  1  1  2            
STABILITY      C  F  F  F  F  A  A  A  A  G  G  G  G  A  A  B  B  G            
CEILING        5800  None  None  None  None  None  None  None  None  None      
STA PRES      28.52 28.55 28.59 28.65 28.61 28.66 28.70 28.73 28.69            


Date           05/19Wed 05/20/26Thu 05/21/26Fri 05/22/26Sat 05/23/26
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       94      66      92      64      78      55      68      54      73
TEMP          92 85 71 69 90 83 70 66 75 70 61 57 67 65 59 56 70 68
DEWPT         60 58 56 59 62 65 63 62 63 59 55 53 57 56 55 55 59 59
RH            34 40 59 70 39 55 78 87 66 68 81 86 70 73 87 96 68 73
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW FW B2 B1 B1 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2
POP 12HR            0       0      60      40      80      70      60      60      50
RAIN SHWRS                IS NM SC SC NM  O NM SC NM NM NM NM SC SC
TSTMS                        SC IS       SC          IS          IS

$$


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