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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 PM EDT Tue Jul 28 2026
NCZ005-290800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
901 PM EDT Tue Jul 28 2026
Date 07/28/26 Wed 07/29/26 Thu 07/30/26 Fri
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 68 85 61 85 62
TEMP 74 71 69 69 79 84 84 77 70 66 63 66 76 82 84 79 71 66 63 67
DEWPT 71 69 66 67 66 64 63 63 61 61 61 62 62 62 62 64 62 61 60 63
MIN/MAX RH 94 50 94 46 92
RH 90 93 90 93 64 51 49 62 73 84 93 87 62 51 48 60 73 84 90 87
WIND DIR SW W NW NW NW NW NW NW NW NW NW NW N N N N NW N N N
WIND SPD 5 4 6 5 8 9 9 6 5 4 4 4 5 4 3 2 3 2 3 2
CLOUDS SC CL FW CL CL FW FW FW CL CL CL CL CL FW FW FW FW FW FW CL
CLOUDS(%) 29 5 7 2 3 6 6 6 1 0 1 0 2 9 11 14 11 10 8 2
VSBY 9 8 8 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 0 0 0 0
RAIN SHWRS
TSTMS
MIX HGT <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 1 4 6 6 <1
T WIND DIR SW W NW NW N NW NW NW NW NW NW NW NW NW NW N
T WIND SPD 6 6 9 10 16 14 14 12 5 6 4 10 8 9 10 5
DISPERSION PR VP PR PR PR VP VP VP VP VP VP
ADI 3 3 4 12 71 95101 6 3 3 2 15 36 65 78 3
MAX LVORI 6 6 9 5 1 1 1 3 3 5 6 4 1 1 1 3
STABILITY F F F A B B B F F F F A A A A G
CEILING None None None None None None None None
STA PRES 28.96 29.03 29.04 29.12 29.16 29.18 29.15
Date 07/31Sat 08/01/26Sun 08/02/26Mon 08/03/26Tue 08/04/26
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 86 66 84 68 81 69 82 69 84
TEMP 84 81 71 71 84 79 71 70 80 76 71 71 80 77 70 71 83 78
DEWPT 65 66 64 67 69 68 68 69 72 71 70 71 74 72 70 71 73 72
RH 53 60 79 87 61 69 90 97 77 85 97100 82 85100100 72 82
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1
POP 12HR 0 0 10 20 60 50 50 30 40
RAIN SHWRS IS IS IS NM SC IS SC SC SC IS IS SC
TSTMS IS SC SC SC 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
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