Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sat Sep 19 2026
VAZ024-200800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
401 PM EDT Sat Sep 19 2026
Date 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue
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 65 88 65 82 61
TEMP 80 73 68 67 66 66 76 86 84 75 70 68 67 66 75 80 77 70 66 65 63 62
DEWPT 66 66 66 66 65 65 68 69 70 71 69 68 67 66 70 70 68 67 65 64 63 62
MIN/MAX RH 99 55 100 69 100
RH 62 79 93 97 97 97 76 57 63 87 97100100100 84 72 74 90 97 97100100
WIND DIR SE SE N SE E SE SW SW SW S SW N N N E E E E E NE NE NE
WIND SPD 3 1 0 1 1 1 3 3 2 1 1 0 1 1 2 3 3 3 2 1 1 2
CLOUDS FW SC B1 B2 B1 B1 B1 B1 B1 B1 SC SC SC SC B2 B2 B2 OV OV OV B2 B2
CLOUDS(%) 22 33 63 76 58 53 52 54 55 65 48 37 44 50 75 78 83 88 92 90 81 78
VSBY 9 9 8 7 5 5 10 6 5 6 6 4 3 3 10 10 10 10
POP 12HR 20 40 10 70 70
RAIN SHWRS SC SC IS IS NM NM NM NM SC SC SC
TSTMS SC SC IS SC IS
MIX HGT 3 <1 <1 <1 <1 <1 2 4 2 <1 <1 <1 <1 <1 2 2 2 <1
T WIND DIR S SE SE S S S SW SW S SW S NW N NE E NE NE NE
T WIND SPD 5 6 5 10 9 8 10 5 10 9 3 2 2 2 10 10 10 11
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 23 3 3 5 4 6 28 21 27 4 2 1 1 2 24 28 21 5
MAX LVORI 2 4 6 7 9 8 3 2 2 6 10 10 10 9 4 3 3 6
STABILITY B G F F F C C C C F F G F A C C C F
CEILING 2900 1800 None 3000 None None 300 700 300
STA PRES 28.55 28.53 28.52 28.43 28.44 28.47 28.54 28.54
Date 09/22Wed 09/23/26Thu 09/24/26Fri 09/25/26Sat 09/26/26
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 57 62 54 65 52 73 51 74
TEMP 72 65 60 57 62 57 55 55 64 59 54 53 70 63 54 52 72 64
DEWPT 67 65 60 57 60 57 55 55 60 58 54 53 57 56 52 50 54 54
RH 84100100100 93100100100 87 96100100 63 78 93 93 53 70
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 OV OV OV B2 B2 B2 B2 B1 B2 B1 B1 SC SC SC SC SC SC
POP 12HR 70 70 60 50 40 20 20 10 10
RAIN SHWRS SC NM NM NM NM SC SC SC SC 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