National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1201 PM EDT Mon Apr 27 2026

NCZ003-272000-
RAWS 310302
36.35N  80.48W Elev. 1076 ft
1201 PM EDT Mon Apr 27 2026

Date             Mon 04/27/26            Tue 04/28/26            Wed 04/29/26
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                 71          45          67          54          72
TEMP                   68 70 65 57 51 47 48 55 61 66 65 59 56 54 56 62 67 71 68
DEWPT                  43 42 42 43 44 44 44 50 53 54 55 55 54 54 55 59 61 62 59
MAX/MIN RH                   36          92          64          98          71
RH                     40 36 43 59 77 89 86 83 75 65 70 87 93100 96 90 81 73 73
WIND DIR                E  E  E SE SE SE  S SW SW SW  S SW SW SW  S  S  S SW  W
WIND SPD                5  5  5  5  5  4  2  5  6  6  4  4  3  3  3  5  8  9  9
WIND GUST                                                              18      
CLOUDS                 FW FW SC SC SC B1 B2 OV B2 B1 SC B1 B1 B2 OV OV OV OV B1
CLOUDS(%)              14 23 28 38 34 59 77 89 83 69 39 55 63 71 98 98 94 94 59
VSBY                   10 10 10 10 10 10 10  6  8 10 10 10  9                  
POP 12HR                      0          20          70          40         100
RAIN SHWRS                               SC SC SC    IS    SC SC  O  O  O  O SC
TSTMS                                    IS                   IS    IS SC SC   
MIX HGT                 4  4 <1 <1 <1 <1 <1  2  3  3 <1 <1 <1 <1 <1  2  2  2 <1
T WIND DIR              E  E  E  E SE SE  S NE  S SW  S SW SW  S  S  S SW  W  W
T WIND SPD              8  8  8  4  4  8  6  2  6 11  6  8  6  4  5 18 23 28 10
DISPERSION                   PR PR PR VP             VP VP VP VP             PR
ADI                    38 43  4  2  3  4  9  5 21 40  5  5  3  2  6 41 51 74  9
MAX LVORI               1  1  2  3  4  6  5  5  3  1  3  5  6  9  6  4  3  3  3
STABILITY               A  A  F  F  E  F  B  C  C  C  E  E  F  F  B  C  C  C  D
CEILING                    None  None 13200  2800   600  None   400   300  1900
STA PRES                  29.11 29.13 29.12 29.14 29.04 29.01 28.87 28.74 28.65


Date          Thu 04/30/26Fri 05/01/26Sat 05/02/26Sun 05/03/26
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       51      67      42      68      44      65      39      68
TEMP          57 52 64 61 47 45 66 62 49 45 61 58 44 43 65 62
DEWPT         52 46 38 34 34 34 36 38 40 38 37 34 33 33 33 36
RH            83 80 38 36 60 65 33 41 71 76 41 40 65 67 30 38
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 SC SC SC FW SC FW SC B1 B1 B1 SC SC FW FW FW
POP 12HR           40      10      10      20      30      30      10      10
RAIN SHWRS    SC IS                IS SC SC SC 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