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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Mon Sep 14 2026
VAZ046-142000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
401 AM EDT Mon Sep 14 2026
Date Mon 09/14/26 Tue 09/15/26 Wed 09/16/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 85 56 83 56 88
TEMP 68 70 79 82 83 74 66 60 57 57 73 80 82 74 64 60 57 59 77 85 87 78
DEWPT 67 67 68 65 63 60 53 50 49 50 54 57 59 59 58 58 56 58 62 63 63 63
MAX/MIN RH 50 78 44 100 44
RH 97 90 69 56 51 62 63 69 75 77 51 45 46 59 81 93 96 96 60 48 45 60
WIND DIR W N NE NE NE NE NE NE N NE E E E E SE S N SW S SE SE E
WIND SPD 3 5 9 9 8 8 6 4 4 4 4 3 3 2 2 1 0 1 3 3 3 2
WIND GUST 18
CLOUDS FW FW FW FW FW FW FW FW FW FW SC SC CL FW FW CL CL CL CL CL FW CL
CLOUDS(%) 16 16 20 13 10 13 13 7 9 22 34 35 5 21 7 5 3 0 1 4 6 4
VSBY 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 3 5 5 <1 <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR W NW N N N NE NE NE NE NE E NE E E SE SE N N W SE SE SE
T WIND SPD 3 2 16 10 9 17 17 9 4 4 6 3 3 3 2 1 1 0 3 3 3 4
DISPERSION VP PR PR VP VP VP VP VP VP VP
ADI 2 2 55 43 52 12 8 4 2 5 27 18 17 2 1 1 1 0 12 16 18 2
MAX LVORI 8 6 3 1 1 2 3 3 4 4 2 2 2 3 5 9 10 9 2 2 2 3
STABILITY G B C C B E F F F B B B B G G G G A B B B G
CEILING None None None None None None None None None None
STA PRES 29.36 29.37 29.48 29.56 29.63 29.58 29.61 29.63 29.64 29.59
Date Thu 09/17/26Fri 09/18/26Sat 09/19/26Sun 09/20/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 60 90 65 93 65 89 66 87
TEMP 64 63 88 79 68 67 91 81 70 66 86 79 68 68 85 77
DEWPT 61 60 64 63 60 61 67 68 65 64 67 66 66 66 68 68
RH 90 90 45 58 76 81 45 65 84 93 53 64 93 93 57 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL FW FW FW FW B1 SC SC SC SC SC SC SC B1
POP 12HR 0 5 0 30 20 20 20 30
RAIN SHWRS SC IS IS IS SC
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