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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 PM EDT Sun Sep 27 2026
VAZ018-280800-
RAWS 444002
37.56N 80.18W Elev. 2702 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 53 72 55 79 55
TEMP 56 56 55 54 64 71 71 60 58 57 55 55 70 78 77 64 59 58 57 57
DEWPT 51 50 50 50 53 55 56 54 54 54 53 53 58 59 58 57 57 56 55 55
MIN/MAX RH 86 57 91 51 97
RH 83 80 83 86 67 57 59 81 86 90 93 93 66 52 52 78 93 93 93 93
WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW SW SW SE N N N N
WIND SPD 8 6 8 8 6 6 6 4 3 2 2 2 1 1 1 1 0 0 0 0
WIND GUST 19 18 19 17 16
CLOUDS SC B2 OV B2 OV B2 B2 B1 SC FW FW FW FW SC SC FW FW FW FW FW
CLOUDS(%) 50 85 92 86 89 78 78 60 36 24 17 24 25 41 29 25 16 7 6 14
VSBY 10 10 10 8 10 10 10 9 7 6 7 7 7 7 7 7 7 7 7 7
POP 12HR 5 5 0 0 0
MIX HGT <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW W NW N
T WIND SPD 12 6 6 8 14 12 11 11 8 4 4 5 1 2 3 0
DISPERSION PR PR PR VP VP VP VP VP VP VP VP
ADI 8 3 6 10 27 47 38 5 4 2 2 6 5 13 20 0
MAX LVORI 3 4 4 4 3 1 1 4 6 6 6 5 3 2 2 4
STABILITY E F D D D B B F G G G B A A A G
CEILING 3600 2500 2200 None None None None None
STA PRES 27.67 27.73 27.73 27.80 27.81 27.87 27.86
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 84 57 86 61 84 59 72 54 68
TEMP 81 69 61 58 84 72 64 62 81 71 64 60 70 62 57 55 66 60
DEWPT 57 58 56 56 60 58 57 58 64 62 60 58 61 57 54 54 61 58
RH 44 68 84 93 44 61 78 87 56 73 87 93 73 84 90 96 84 93
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC FW SC SC B1 B1 B1 B1 B2 B2 B1 B1 B1
POP 12HR 0 0 0 0 20 30 40 50 50
RAIN SHWRS IS 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