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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Tue Sep 29 2026
VAZ024-300800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
401 PM EDT Tue Sep 29 2026
Date 09/29/26 Wed 09/30/26 Thu 10/01/26 Fri
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 86 58 91 60
TEMP 78 69 63 59 57 57 74 84 85 72 66 62 59 59 78 88 90 78 68 64 62 62
DEWPT 59 62 61 59 57 57 63 58 56 59 58 58 56 55 59 55 55 58 58 58 57 57
MIN/MAX RH 100 37 88 29 89
RH 52 78 93100100100 69 41 37 64 75 87 90 87 52 33 31 50 70 81 84 84
WIND DIR E E N N N N SW SW SW SW N W W W SW SW SW S SW W W W
WIND SPD 1 1 0 0 0 0 1 3 2 1 0 1 1 1 1 3 3 1 1 1 1 1
CLOUDS SC SC FW FW FW FW SC FW B1 B1 B1 SC SC FW FW FW FW FW FW FW FW FW
CLOUDS(%) 48 35 12 15 24 23 31 22 53 56 53 43 28 8 16 17 10 17 18 14 13 12
VSBY 10 10 9 5 1 1 7 10 7 10 6 6 6 8 8 8 8 8 8 8 8
POP 12HR 0 0 0 0 0
Obvis PF F+ F+
MIX HGT 4 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 2 5 7 <1
T WIND DIR SE E E E NE N S SW SW S S SW W NW W W SW SW
T WIND SPD 1 3 2 2 1 0 4 8 6 4 3 2 2 2 13 9 9 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 6 2 1 1 1 0 16 45 23 2 2 1 1 2 40 57 66 2
MAX LVORI 2 4 7 10 10 10 3 1 2 3 4 5 6 6 1 1 1 2
STABILITY A G G G G A A B C F F F G A A B B G
CEILING None None None None 16100 None None None None
STA PRES 28.58 28.59 28.63 28.58 28.59 28.58 28.61 28.56
Date 10/02Sat 10/03/26Sun 10/04/26Mon 10/05/26Tue 10/06/26
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 92 64 78 58 71 55 74 45 69
TEMP 91 78 68 64 75 69 60 58 68 65 58 56 72 64 50 46 67 58
DEWPT 61 64 65 63 63 62 60 58 61 61 58 55 52 50 47 42 42 44
RH 37 62 90 97 66 78100100 78 87100 96 49 60 89 86 40 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 SC SC SC SC FW SC
POP 12HR 5 30 70 70 60 30 10 0 0
RAIN SHWRS IS SC NM NM NM NM NM NM 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