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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri Apr 24 2026
VAZ046-250800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 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 56 83 50 61 43
TEMP 66 62 57 60 77 83 78 68 62 60 54 51 53 59 60 57 52 48 44 46
DEWPT 52 52 52 53 56 56 58 60 59 58 54 50 48 48 46 44 44 43 41 40
MIN/MAX RH 84 40 100 60 88
RH 61 70 83 78 48 40 50 76 90 93100 96 83 67 60 62 74 83 89 79
WIND DIR N N N W W SW NW N NE NE NE NE NE NE NE NE NE N N N
WIND SPD 0 0 0 3 4 5 6 5 5 5 9 11 11 12 13 10 10 8 8 9
WIND GUST 19 23 23 23 23 20 18 18
CLOUDS SC FW FW SC SC SC B2 OV OV OV OV B2 B2 B2 B1 B1 B1 SC SC FW
CLOUDS(%) 32 13 11 48 28 48 75 95 95 92 92 85 85 70 63 62 55 47 35 14
VSBY 10 10 10 10 10 9 8 6 6 6 6 6 6 7 7 10
POP 12HR 20 70 90 50 20
RAIN SHWRS IS NM O O O O SC SC SC SC IS IS IS IS
TSTMS IS SC IS
MIX HGT <1 <1 <1 <1 4 9 6 <1 <1 <1 <1 1 2 3 3 <1
T WIND DIR SW W W N SW SW W NW NE NE NE NE N N NE N
T WIND SPD 2 2 2 0 10 13 10 20 5 2 18 21 18 19 16 16
DISPERSION VP VP VP PR PR PR PR FR FR PR PR
ADI 1 1 1 0 57138 47 14 4 2 16 32 34 47 40 14
MAX LVORI 3 3 5 4 1 1 1 4 6 8 5 4 4 1 1 2
STABILITY G G G A A A C E E E D D D D D D
CEILING None None None 4800 100 100 700 1000 None
STA PRES 29.09 29.06 29.06 29.05 29.08 29.15 29.29 29.35
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 69 43 70 52 78 52 74 48 69
TEMP 67 63 48 47 67 66 57 56 75 70 58 55 71 67 53 51 66 63
DEWPT 42 44 42 43 48 51 52 53 57 55 53 52 49 46 45 45 48 48
RH 40 50 80 86 50 58 83 90 54 59 83 90 46 47 74 80 52 58
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 B1 B2
POP 12HR 10 10 50 20 50 30 30 40 60
RAIN SHWRS SC SC IS IS SC SC SC IS SC SC SC SC SC NM
TSTMS IS 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