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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1101 AM EDT Mon Sep 28 2026
VAZ046-282000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1101 AM EDT Mon Sep 28 2026
Date Mon 09/28/26 Tue 09/29/26 Wed 09/30/26
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 76 59 78 57 85
TEMP 74 75 68 65 63 60 60 73 78 77 68 63 60 59 59 76 83 84 74
DEWPT 56 56 60 60 60 59 59 61 60 57 61 61 60 58 59 62 60 55 59
MAX/MIN RH 51 98 50 100 37
RH 53 52 76 84 90 96 96 66 54 50 78 93100 96100 62 46 37 59
WIND DIR NW N NE N N N N NE SW E E E NE N N SW SW S SE
WIND SPD 2 2 2 3 1 1 2 1 2 2 2 1 1 1 1 2 5 5 3
CLOUDS SC SC B2 B2 B1 SC SC SC SC SC FW FW FW FW FW FW FW FW FW
CLOUDS(%) 27 33 85 85 69 41 39 39 44 36 13 19 18 21 6 7 15 15 13
VSBY 10 10 10 10 9 5 8 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 5 0 0
MIX HGT 5 5 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR NW NW NE NE NE N N N NW NW NE NE N N N SW SW S S
T WIND SPD 5 4 8 11 6 3 3 2 2 2 1 1 1 1 1 8 6 8 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 32 24 4 5 3 2 4 9 14 10 1 1 1 1 1 34 44 54 2
MAX LVORI 1 2 4 5 6 8 9 3 2 2 4 8 10 10 10 1 1 1 3
STABILITY B B F F F F B A B B G G G G A B B B G
CEILING None 2900 None None None None None None None
STA PRES 29.20 29.28 29.32 29.37 29.34 29.38 29.40 29.45 29.40
Date Thu 10/01/26Fri 10/02/26Sat 10/03/26Sun 10/04/26
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 59 88 62 89 62 74 59 71
TEMP 62 60 86 76 65 63 86 77 65 62 74 66 60 59 71 65
DEWPT 58 57 56 58 58 58 61 62 60 56 57 58 57 57 60 62
RH 87 90 36 54 78 84 43 60 84 81 55 75 90 93 68 90
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW SC B1 SC B1 B1 B1 B1 B1 B2
POP 12HR 0 0 0 20 20 30 20 40
RAIN SHWRS IS IS IS SC SC IS IS IS 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