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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri Aug 28 2026
NCZ003-290800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
401 PM EDT Fri Aug 28 2026
Date 08/28/26 Sat 08/29/26 Sun 08/30/26 Mon
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 66 82 67 85 67
TEMP 81 74 69 67 66 67 74 79 81 75 69 68 68 68 75 81 84 78 71 69 68 69
DEWPT 69 69 68 67 66 67 69 70 69 70 69 68 68 68 70 70 70 70 69 69 68 68
MIN/MAX RH 100 67 100 62 100
RH 67 84 97100100100 84 74 67 84100100100100 84 69 63 76 93100100 97
WIND DIR NE N NE NE NE NE E E E E SE E E E S S S S SW SW W W
WIND SPD 2 1 2 3 4 5 5 5 4 2 1 1 1 1 2 3 3 1 2 2 2 3
CLOUDS B1 B1 SC B2 B1 SC B1 B2 B1 SC SC B1 B2 B1 B1 SC SC SC SC FW SC FW
CLOUDS(%) 68 53 47 72 58 48 53 75 51 42 41 59 73 58 55 39 31 29 27 19 32 19
VSBY 10 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 20 20 5 0
RAIN SHWRS SC IS IS IS IS
TSTMS SC IS IS IS
MIX HGT 4 <1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR NE N N N NE NE E SE SE SE S SE S SW SW SW SW SW
T WIND SPD 4 0 2 3 5 5 4 8 6 9 4 1 3 6 10 10 10 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 21 0 1 2 4 6 13 30 26 4 2 1 2 7 34 57 51 3
MAX LVORI 3 6 8 10 9 9 4 3 3 5 9 10 10 8 4 1 1 4
STABILITY B F F F E A C C C F F F F B B A A G
CEILING None 2900 600 None None 900 None None None
STA PRES 29.02 29.07 29.12 29.09 29.12 29.13 29.14 29.06
Date 08/31Tue 09/01/26Wed 09/02/26Thu 09/03/26Fri 09/04/26
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 89 70 92 72 93 72 92 71 91
TEMP 87 81 72 71 89 83 75 73 90 83 75 73 89 82 73 72 88 81
DEWPT 68 70 68 67 68 69 68 68 68 69 68 68 68 70 68 68 68 69
RH 53 69 87 87 50 63 79 84 49 63 79 84 50 67 84 87 52 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW CL FW FW SC FW FW SC SC FW FW SC
POP 12HR 5 0 0 0 10 10 20 10 20
RAIN SHWRS IS IS
TSTMS IS 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