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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 PM EDT Sun Sep 27 2026
VAZ024-280800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
931 PM EDT Sun Sep 27 2026
Date 09/27/26 Mon 09/28/26 Tue 09/29/26 Wed
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 77 58 82 57
TEMP 62 60 60 59 68 76 76 68 63 61 58 58 72 80 81 72 63 61 59 59
DEWPT 52 52 51 52 54 57 57 57 56 56 55 55 59 59 59 60 59 58 57 57
MIN/MAX RH 77 50 90 46 98
RH 70 75 72 78 61 52 52 68 78 84 90 90 64 49 47 66 87 90 93 93
WIND DIR W W W W NW NW NW NW N N N N N SW S SE N N N N
WIND SPD 3 2 2 2 3 3 3 2 1 0 0 0 0 2 1 1 0 0 0 0
CLOUDS B2 OV B2 B2 B2 B2 B2 B2 B1 SC FW SC SC SC SC SC SC FW FW FW
CLOUDS(%) 75 95 87 85 84 87 82 81 55 34 20 26 36 45 37 31 33 24 8 10
VSBY 10 10 10 10 10 9 8 6 7 6 5 7 7 7 7 7 7 7 7 7
POP 12HR 0 5 5 0 0
MIX HGT <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR NW W NW NW NW NW NW NW N NW NW NW E NW NW NW
T WIND SPD 8 4 3 4 5 4 5 4 6 4 3 2 1 3 3 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 4 2 2 4 16 18 19 2 3 2 2 2 5 19 20 1
MAX LVORI 3 3 3 4 2 2 2 3 4 5 6 6 3 2 2 3
STABILITY F F F C C C C F F G G A A B A G
CEILING 4200 4000 3500 None None None None None
STA PRES 28.37 28.43 28.42 28.50 28.53 28.59 28.57
Date 09/30Thu 10/01/26Fri 10/02/26Sat 10/03/26Sun 10/04/26
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 87 57 90 60 89 58 75 54 71
TEMP 84 73 62 58 88 77 65 61 86 76 65 59 73 66 57 55 68 64
DEWPT 57 61 60 58 59 60 60 59 63 64 63 58 59 58 56 55 59 60
RH 40 66 93100 38 56 84 93 46 66 93 96 62 75 96100 73 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC FW FW SC FW FW SC B1 B2 B1 B1 B2 B2 B1 B1 B1
POP 12HR 0 0 0 0 10 30 40 40 50
RAIN SHWRS IS SC SC SC SC SC SC SC
$$
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