National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Thu Apr 30 2026

VAZ024-010800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
131 AM EDT Thu Apr 30 2026

Date           04/29/26      Thu 04/30/26            Fri 05/01/26            Sat
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                 50          67          39          70          44
TEMP                   56 52 53 61 66 65 58 49 44 40 43 59 67 69 63 54 50 47 45
DEWPT                  51 48 47 43 39 37 35 34 34 34 35 36 36 37 40 41 40 40 40
MIN/MAX RH                  100          35          80          30          83
RH                     83 86 80 51 37 35 42 56 68 79 73 42 32 31 43 61 68 76 82
WIND DIR                W  W  W NW NW NW NW NW NW NW  W SW SW SW  W NW NW  N  N
WIND SPD                3  3  5  9 11 11  5  2  2  1  1  3  6  6  2  2  2  2  2
WIND GUST                             21 18                      12            
CLOUDS                 SC B2 B1 SC SC FW FW FW SC B1 B1 SC SC B1 B1 B1 B2 B2 B2
CLOUDS(%)              44 71 61 33 27 23  8 23 38 58 59 36 34 53 66 69 80 78 82
VSBY                    2  2  3 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                     30           0           0          10          20
RAIN SHWRS                                                             IS IS SC
TSTMS                                                                          
MIX HGT                <1 <1  2  5  7  7  1 <1 <1 <1  1  4  7  8 <1            
T WIND DIR             NW NW NW NW NW NW NW NW NW NW NW  S SW SW  S            
T WIND SPD              8  8 18 16 13 16 12 11  5  4  4  2 11 13  3            
DISPERSION             VP VP             PR VP VP VP             VP VP VP VP   
ADI                     4  4 40 95101117  6  5  3  2  8 13 83 69  2            
MAX LVORI               5  6  4  1  1  1  2  3  3  5  3  2  1  1  2            
STABILITY               G  F  A  B  B  B  F  G  G  F  A  A  B  C  F            
CEILING                   15200  None  None  None  None  None  None  6400      
STA PRES                  28.31 28.35 28.34 28.45 28.47 28.47 28.39            


Date           05/02Sun 05/03/26Mon 05/04/26Tue 05/05/26Wed 05/06/26
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       63      36      68      39      76      49      79      48      80
TEMP          59 57 43 41 64 60 45 44 73 68 54 53 74 69 54 52 76 73
DEWPT         41 37 32 33 30 31 32 35 41 46 47 48 48 48 45 47 50 52
RH            51 47 65 73 28 33 60 70 31 45 77 83 40 47 71 83 40 48
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B1 SC FW FW FW CL FW FW SC SC SC SC SC SC SC SC B1
POP 12HR           40      20       0       5      20      20      20      10      30
RAIN SHWRS    SC SC IS                   IS IS    IS IS       IS SC
TSTMS            IS                      IS          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