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

VAZ046-010800-
RAWS 441101
37.39N  78.80W Elev. 804 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                 53          69          41          69          47
TEMP                   58 54 55 63 68 67 60 51 46 42 45 59 66 69 63 55 51 47 48
DEWPT                  54 51 50 46 42 39 37 36 36 35 36 37 37 37 39 40 42 42 43
MIN/MAX RH                   95          35          78          31          83
RH                     86 90 83 54 39 36 42 56 68 76 70 44 34 31 41 57 71 83 83
WIND DIR                W  W  W NW NW NW NW NW NW NW NW SW SW SW  S  N  N NE NE
WIND SPD                6  5  8 10 11 13  6  5  3  2  2  5  8  8  4  3  3  3  5
WIND GUST                          21 24 17                                    
CLOUDS                 B1 B2 B2 SC SC SC FW FW SC SC SC SC FW SC B2 B2 B2 B2 B2
CLOUDS(%)              69 84 70 35 31 28  9 13 29 42 49 37 22 46 76 74 82 84 86
VSBY                   10  6 10 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                     30           0           0           5          30
RAIN SHWRS                                                             SC SC SC
TSTMS                                                                          
MIX HGT                <1 <1 <1  5  7  7 <1 <1 <1 <1 <1  5  6  8 <1            
T WIND DIR              W NW NW NW NW NW NW NW NW NW  N SW SW SW  S            
T WIND SPD              4  6 14 13 10 12 12 14  5  3 10  1  8 12  3            
DISPERSION             PR PR             PR PR VP VP             VP VP VP VP   
ADI                     3  5 16 81 76 60  6  7  3  2 12  7 56101  2            
MAX LVORI               6  5  4  1  1  1  2  3  3  4  3  2  1  1  2            
STABILITY               E  E  B  B  B  C  F  F  G  F  A  A  B  B  E            
CEILING                   15800  None  None  None  None  None  None  7300      
STA PRES                  29.10 29.14 29.12 29.24 29.29 29.29 29.21            


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       60      38      67      40      75      51      79      50      80
TEMP          57 56 45 43 64 59 45 46 72 68 56 55 76 70 56 55 76 72
DEWPT         45 43 37 36 32 34 33 36 40 45 47 49 48 48 46 49 50 53
RH            64 62 73 76 30 39 62 68 31 43 72 80 37 45 69 80 40 51
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B1 SC CL FW CL CL FW SC FW SC FW SC SC SC SC SC
POP 12HR           50      20       0       0      10      10      20       5      20
RAIN SHWRS    SC SC IS                               IS          IS
TSTMS                                                            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