National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Thu Apr 23 2026

NCZ003-232000-
RAWS 310302
36.35N  80.48W Elev. 1076 ft
801 AM EDT Thu Apr 23 2026

Date             Thu 04/23/26            Fri 04/24/26            Sat 04/25/26
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 83          55          83          57          79
TEMP                74 80 81 74 65 60 57 59 77 82 81 74 66 60 57 60 72 77 76 69
DEWPT               46 45 44 46 46 47 45 47 48 46 46 48 51 51 51 51 56 57 57 56
MAX/MIN RH                   26          69          28          79          50
RH                  37 29 27 37 50 62 64 64 36 28 29 40 58 72 80 72 57 50 52 63
WIND DIR            NW  W  W  W NW NW NW NW  W SW SW SW  W  W  W  W  W  W NW NW
WIND SPD             4  5  5  5  4  3  3  3  3  5  5  4  4  4  3  3  5  6  5  5
CLOUDS              CL FW SC FW FW FW FW FW FW SC SC SC FW FW SC B1 B1 B2 B2 B1
CLOUDS(%)            2 11 28 13  7 13 11 16 25 36 38 27 16 22 26 61 61 83 83 61
VSBY                10 10 10 10 10 10 10 10 10 10 10 10                        
POP 12HR                      5           5          10          10          70
RAIN SHWRS                                                       SC SC NM NM SC
TSTMS                                                                  SC SC   
MIX HGT              5 10 10 <1 <1 <1 <1 <1  6  9  8 <1 <1 <1 <1 <1  3  6  2 <1
T WIND DIR          NW  W  W  W  W NW NW NW NW  W  W  W  W  W  W  W  W NW NW SW
T WIND SPD          16 11 10  3  2  2  3  2 10  9 11  4  3  3  2  1 14 10 10  5
DISPERSION                   PR VP VP VP             VP VP VP VP             PR
ADI                106129111  2  1  1  2  2 75 97105  2  2  2  1  1 53 47 24  4
MAX LVORI            1  1  1  2  2  3  3  3  1  1  1  2  3  3  4  3  1  1  2  3
STABILITY            A  A  A  F  F  G  G  A  A  A  A  F  F  F  G  B  B  C  C  E
CEILING              None  None  None  None  None  None  None  None  7700  1800
STA PRES            28.99 28.90 28.89 28.86 28.85 28.78 28.78 28.76 28.77 28.77


Date          Sun 04/26/26Mon 04/27/26Tue 04/28/26Wed 04/29/26
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       53      77      51      69      56      74      53      78
TEMP          57 55 74 70 56 52 66 67 59 57 68 69 58 55 75 71
DEWPT         53 50 50 50 49 47 50 50 52 55 59 57 53 51 50 48
RH            86 83 43 49 77 83 56 54 78 93 73 66 83 86 41 44
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 SC FW SC SC SC SC SC B1 B2 B2 B1 SC SC SC SC
POP 12HR           40      20      20      30      60      60      20      20
RAIN SHWRS    SC IS    IS    IS IS SC SC NM NM SC IS IS IS IS
TSTMS                                          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