Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Wed Sep 23 2026
VAZ024-240800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
301 PM EDT Wed Sep 23 2026
Date 09/23/26 Thu 09/24/26 Fri 09/25/26 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 67 44 76 45
TEMP 57 55 56 55 53 51 57 64 65 56 51 48 45 45 65 75 74 59 53 49 47 46
DEWPT 54 53 52 51 49 48 52 52 50 50 47 45 43 41 43 42 43 43 42 43 42 43
MIN/MAX RH 97 57 92 30 93
RH 90 93 86 86 86 89 83 65 58 80 86 89 93 86 45 31 33 55 66 80 83 89
WIND DIR NE NE NE NE N N NE NE NE NE N N N N N N N N N NW NW NW
WIND SPD 5 6 5 4 5 6 6 5 5 4 3 2 3 4 5 5 5 4 3 2 2 3
WIND GUST 16 19 21 21 20 21 17 13 12 14
CLOUDS B2 OV B2 B2 B2 B2 B1 B2 B1 B1 SC FW FW CL CL FW CL CL CL FW CL CL
CLOUDS(%) 87 94 87 74 75 73 69 75 63 51 35 16 9 0 3 7 4 5 5 7 5 0
VSBY 3 4 2 3 3 3 6 10 6 10 10 9 9
POP 12HR 40 10 0 0 0
RAIN C C S S C
MIX HGT 2 1 <1 1 <1 1 2 4 4 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR NE NE NE NE NE NE NE NE NE NE N N N N N NE N N
T WIND SPD 11 10 14 18 16 16 13 14 14 8 5 5 5 5 11 13 13 4
DISPERSION PR PR VP PR VP VP VP VP VP VP VP VP
ADI 20 7 10 12 11 22 30 52 53 5 3 3 3 6 42 66 69 2
MAX LVORI 4 6 5 4 5 4 3 1 1 4 6 6 6 5 1 1 1 2
STABILITY D E E E E D D C C E G G G B B B B F
CEILING 1700 1900 2400 13100 None None None None None
STA PRES 28.79 28.77 28.76 28.69 28.70 28.67 28.65 28.59
Date 09/26Sun 09/27/26Mon 09/28/26Tue 09/29/26Wed 09/30/26
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 82 47 81 49 82 50 81 54 84
TEMP 81 64 51 49 79 67 54 51 79 68 55 52 80 70 58 56 82 74
DEWPT 45 47 48 46 48 50 49 48 51 53 52 50 56 57 55 54 62 64
RH 28 54 89 89 34 54 83 89 38 59 90 93 44 63 90 93 51 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL FW CL CL FW SC FW FW FW FW FW CL SC FW FW FW SC
POP 12HR 0 0 0 0 0 0 0 0 10
$$
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