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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Thu Apr 23 2026
VAZ024-240800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
301 PM EDT Thu Apr 23 2026
Date 04/23/26 Fri 04/24/26 Sat 04/25/26 Sun
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 54 86 57 81 51
TEMP 83 75 66 60 55 57 78 84 85 76 67 61 57 60 75 80 76 70 63 58 54 52
DEWPT 47 49 48 48 48 49 52 48 49 50 50 50 50 52 57 58 58 56 54 52 50 49
MIN/MAX RH 77 28 79 48 90
RH 28 40 52 64 77 75 40 29 29 40 54 67 77 75 54 47 54 61 72 80 86 89
WIND DIR NW W W W NW NW W W W W W W W W W W W W NW N N N
WIND SPD 4 2 1 1 1 1 2 4 4 2 1 1 1 1 2 5 4 2 2 2 2 3
CLOUDS FW FW CL FW FW SC FW SC SC FW SC FW SC B1 B1 B2 B2 B1 B1 B1 B1 SC
CLOUDS(%) 24 19 5 6 11 30 11 27 33 25 29 25 32 65 65 87 87 69 67 54 54 48
VSBY 10 10 10 10 10 10 10 10 7 7 7 10 10
POP 12HR 5 20 20 80 50
RAIN SHWRS IS IS IS IS IS IS SC SC O SC SC SC SC IS
TSTMS SC
Obvis PF PF
MIX HGT 9 <1 <1 <1 <1 <1 7 10 8 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR W W NW NW NW NW NW W W W W NW NW W NW NW NW NW
T WIND SPD 13 4 3 3 3 3 11 11 11 4 2 3 2 5 14 16 13 9
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 145 2 2 2 2 3 95124103 2 1 2 1 6 63 69 46 4
MAX LVORI 1 2 2 3 4 4 1 1 1 2 3 3 4 4 1 1 1 3
STABILITY A G G G G A A A A G G G G B B C C F
CEILING None None None None None None 6200 5200 26200
STA PRES 28.43 28.41 28.39 28.32 28.32 28.31 28.33 28.32
Date 04/26Mon 04/27/26Tue 04/28/26Wed 04/29/26Thu 04/30/26
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 70 45 72 49 71 54 79 50 75
TEMP 67 68 52 47 70 65 52 50 65 66 58 55 77 71 57 54 73 69
DEWPT 48 44 43 42 45 44 44 47 54 54 52 52 50 46 45 47 45 42
RH 50 42 71 83 41 46 74 89 68 65 80 90 39 41 64 77 37 37
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC SC B1 B2 B2 B1 SC B1 B1 SC SC B1 B1
POP 12HR 20 10 10 40 80 30 40 20 40
RAIN SHWRS IS SC O SC SC IS SC SC IS IS SC SC
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