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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
531 PM EDT Fri Apr 24 2026
VAZ024-250800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
531 PM EDT Fri Apr 24 2026
Date 04/24/26 Sat 04/25/26 Sun 04/26/26 Mon
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 55 82 52 67 43
TEMP 74 66 61 57 58 77 82 76 68 63 60 55 52 56 64 66 60 52 50 46 44
DEWPT 50 50 49 49 51 56 56 58 58 58 56 54 51 50 49 48 44 44 42 41 40
MIN/MAX RH 80 41 98 52 88
RH 43 56 65 75 77 48 41 54 70 84 87 96 96 80 58 52 55 74 74 83 86
WIND DIR N N N N NW W W NW S E E N NE NE NE NE NE NE NE N N
WIND SPD 0 0 0 0 1 2 5 4 2 2 2 2 4 5 6 6 5 3 2 2 2
WIND GUST 16 17 18 19 14 12
CLOUDS SC FW FW FW B1 SC B2 OV OV OV B2 B2 B2 B2 B1 B1 SC SC SC FW FW
CLOUDS(%) 37 24 7 10 64 35 84 91 90 90 81 81 78 74 55 51 40 42 44 25 18
VSBY 10 10 10 10 10 10 9 7 6 6 6 6 6 6 7 7 10
POP 12HR 10 80 90 50 20
RAIN SHWRS NM O O O NM NM SC SC SC SC IS IS IS IS
TSTMS SC SC IS
MIX HGT <1 <1 <1 <1 <1 6 7 3 <1 <1 <1 <1 2 2 4 4 1
T WIND DIR W NW NW NW NW W W NW NW NW NW N NE N NE NE NE
T WIND SPD 2 3 3 3 1 10 12 14 1 1 1 2 16 14 16 12 13
DISPERSION VP VP VP VP VP VP VP VP PR VP VP VP
ADI 1 2 2 2 1 71 59 46 1 1 1 1 35 42 59 45 6
MAX LVORI 2 3 3 4 4 1 1 1 4 6 7 8 4 3 1 1 3
STABILITY G G G G A A C C F F F F C C C C F
CEILING None None None 5000 4800 3000 1000 None None
STA PRES 28.31 28.28 28.28 28.25 28.28 28.34 28.46 28.52
Date 04/27Tue 04/28/26Wed 04/29/26Thu 04/30/26Fri 05/01/26
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 73 44 72 52 80 50 75 47 69
TEMP 70 65 49 47 67 67 57 55 77 71 56 53 73 68 53 49 66 63
DEWPT 42 42 42 43 50 51 51 52 54 50 49 48 46 43 43 43 46 45
RH 36 43 77 86 54 56 80 90 45 47 77 83 38 40 69 80 48 52
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW B1 B2 SC SC B1 B1 B1 SC B1 B1 B1 B1 B2 B2
POP 12HR 10 10 60 30 50 30 30 40 60
RAIN SHWRS SC NM SC IS SC SC SC IS SC SC SC SC NM NM
TSTMS IS SC
$$
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