Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Wed Apr 22 2026
NCZ003-230800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
231 PM EDT Wed Apr 22 2026
Date 04/22/26 Thu 04/23/26 Fri 04/24/26 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 51 82 55 83 57
TEMP 78 71 62 56 52 55 74 80 81 74 65 58 55 58 76 82 81 74 67 60 58 60
DEWPT 39 41 42 41 41 41 46 45 44 45 47 48 46 47 49 47 47 48 49 50 49 51
MIN/MAX RH 66 27 72 29 74
RH 25 34 48 57 66 59 37 29 27 35 52 69 72 67 39 29 30 40 52 69 72 72
WIND DIR W W NW NW NW NW NW W W W W NW NW NW W SW W W W W W W
WIND SPD 10 6 5 4 4 4 4 5 5 4 4 3 3 3 3 5 5 4 4 4 3 3
CLOUDS FW FW FW FW CL FW CL FW FW FW FW FW FW FW FW SC SC SC FW FW SC B1
CLOUDS(%) 20 23 12 14 4 9 3 11 17 23 12 14 13 20 20 32 40 35 24 18 28 51
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 0 10 10
RAIN SHWRS SC
MIX HGT 9 <1 <1 <1 <1 <1 5 10 8 <1 <1 <1 <1 <1 7 10 9 <1
T WIND DIR W W W W NW NW NW W W SW W NW NW NW NW SW W W
T WIND SPD 18 4 2 3 3 3 12 9 9 4 3 2 2 1 8 9 12 3
DISPERSION PR PR VP VP VP VP VP VP VP VP VP VP
ADI 164 2 1 2 2 3 83102 89 2 2 1 1 1 71106128 2
MAX LVORI 1 2 2 3 3 3 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY B F F F F A A A A F F G G A A A A F
CEILING None None None None None None None None None None
STA PRES 28.97 28.98 29.00 29.01 28.91 28.92 28.89 28.88 28.81
Date 04/25Sun 04/26/26Mon 04/27/26Tue 04/28/26Wed 04/29/26
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 80 55 75 50 71 55 77 54 78
TEMP 77 72 59 56 72 69 55 52 67 67 58 57 71 71 59 57 75 71
DEWPT 55 55 53 52 50 48 47 45 48 48 52 53 58 56 54 52 51 48
RH 47 55 80 86 46 47 74 77 50 50 80 86 63 59 83 83 43 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 B1 SC FW FW SC B1 SC B1 B2 B2 B1 SC SC SC SC
POP 12HR 60 60 20 20 20 60 60 30 20
RAIN SHWRS SC NM NM SC IS IS IS SC NM NM SC SC IS IS
TSTMS IS 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