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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
445 AM EDT Tue Jul 28 2026
NCZ003-282000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
445 AM EDT Tue Jul 28 2026
Date Tue 07/28/26 Wed 07/29/26 Thu 07/30/26
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 89 66 83 61 83
TEMP 69 72 82 86 85 79 73 70 68 69 77 80 82 76 68 64 62 64 75 80 82 76
DEWPT 67 68 73 73 74 72 69 67 65 65 66 64 64 64 62 60 58 60 62 62 62 63
MAX/MIN RH 65 92 55 89 50
RH 93 87 74 65 70 79 87 90 90 87 69 58 55 66 81 87 87 87 64 54 51 64
WIND DIR N SW W W W NW NW NW NW NW NW NW NW NW NW NW NW NW NW N NW NW
WIND SPD 0 1 6 10 9 5 5 4 6 9 11 10 9 6 5 5 8 10 10 8 8 4
WIND GUST 19 19 18 18 21 24 21 17 18 20 24 27 20 14
CLOUDS B1 SC B1 B1 B1 SC FW FW FW FW CL CL CL CL FW CL CL CL FW FW FW CL
CLOUDS(%) 64 29 61 58 59 28 8 16 8 17 5 2 2 3 6 5 2 2 6 10 6 2
VSBY 10 10 5 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 20 0 0 0
RAIN SHWRS SC SC SC IS
TSTMS IS SC SC IS
MIX HGT <1 <1 2 4 4 <1 <1 <1 <1 1 4 5 6 <1 <1 <1 <1 1 3 5 6 <1
T WIND DIR W S W W W NW NW NW NW NW NW NW NW NW NW NW NW NW N N N N
T WIND SPD 3 1 19 28 29 14 14 9 8 13 26 24 23 11 9 9 11 18 18 16 16 12
DISPERSION VP PR PR VP PR PR PR PR PR VP
ADI 2 1 56105130 7 7 4 4 25 98142144 5 4 4 8 29 68 93103 6
MAX LVORI 7 7 3 1 1 4 5 6 6 4 3 1 1 3 4 5 5 4 1 1 1 3
STABILITY F A C C B F F F F B C B B F F F E B B B B F
CEILING 700 None None None None None None None None None
STA PRES 27.81 27.76 27.83 27.86 27.90 27.91 27.95 27.97 28.03 28.04
Date Fri 07/31/26Sat 08/01/26Sun 08/02/26Mon 08/03/26
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 85 62 83 65 80 65 80
TEMP 64 64 82 79 66 67 80 76 69 68 77 75 67 68 78 75
DEWPT 58 61 62 66 61 63 67 69 66 68 72 72 67 68 72 72
RH 81 90 51 64 84 87 65 79 90100 85 90100100 82 90
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1
POP 12HR 0 0 5 20 50 70 60 50
RAIN SHWRS IS SC SC SC NM NM IS IS SC
TSTMS IS IS 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