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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Tue Sep 29 2026
VAZ024-300800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
231 AM EDT Tue Sep 29 2026
Date 09/28/26 Tue 09/29/26 Wed 09/30/26 Thu
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 57 81 55 86 56
TEMP 58 57 72 79 79 69 62 58 56 56 75 85 85 71 65 61 58 57
DEWPT 55 55 59 57 56 58 58 58 55 55 61 55 53 54 54 55 53 53
MIN/MAX RH 92 44 99 33 88
RH 90 93 64 47 45 68 87100 96 96 62 36 33 55 68 81 83 86
WIND DIR N N N N SE SE N N N N SW SW S S N N N W
WIND SPD 0 0 0 1 1 1 0 0 0 0 1 3 3 1 0 0 0 1
CLOUDS SC FW FW SC B1 SC FW FW SC FW FW SC SC SC SC SC FW FW
CLOUDS(%) 48 20 24 42 55 29 24 22 44 17 11 50 48 43 37 32 14 13
VSBY 7 7 8 10 8 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 0 0 0
MIX HGT <1 <1 3 5 4 <1 <1 <1 <1 <1 3 5 6 <1
T WIND DIR NW NW SW W S SE SE N N SE SW SW SW S
T WIND SPD 1 1 2 1 1 2 2 0 1 1 6 6 5 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 1 1 10 5 4 1 1 0 1 1 29 40 36 1
MAX LVORI 8 8 3 2 2 3 7 10 10 10 2 1 1 3
STABILITY F A A C C G G G G A A B B G
CEILING None None None None None None None None
STA PRES 28.53 28.58 28.56 28.59 28.61 28.65 28.60
Date 10/01Fri 10/02/26Sat 10/03/26Sun 10/04/26Mon 10/05/26
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 91 58 92 64 80 60 73 53 72
TEMP 88 77 63 60 91 79 68 64 79 69 62 61 71 66 59 53 70 61
DEWPT 53 53 56 55 57 59 62 60 61 61 61 60 63 61 58 52 49 47
RH 30 43 78 84 32 50 81 87 54 76 97 97 76 84 96 96 47 60
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC SC B1 B1 B2 B2 B2 B2 B2 OV B2 B1 SC
POP 12HR 0 0 0 10 60 70 70 40 20
RAIN SHWRS SC NM NM NM NM NM SC IS IS
TSTMS 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