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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 PM EDT Tue Jul 28 2026
VAZ018-290800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
631 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 64 79 59 82 59
TEMP 73 70 69 66 66 74 78 77 70 66 64 61 62 75 81 79 71 65 62 60 63
DEWPT 70 67 65 63 61 62 62 61 59 58 58 56 56 60 60 60 59 57 57 56 58
MIN/MAX RH 91 56 86 49 90
RH 90 90 87 90 84 66 58 58 68 75 81 84 81 60 49 52 66 75 84 87 84
WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 9 8 6 6 9 9 9 9 8 5 4 5 6 6 6 6 5 3 2 2 1
WIND GUST 26 26 24 25 28 26 24 25 24 21 18 18 20 19 17 19 20 13
CLOUDS FW FW FW FW FW CL FW FW FW FW CL CL CL FW FW FW CL FW FW FW FW
CLOUDS(%) 24 16 13 10 11 3 8 11 8 11 4 2 4 10 17 11 5 6 7 7 8
VSBY 10 10 6 3 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 0 0 0
RAIN SHWRS
MIX HGT 2 <1 <1 <1 1 3 4 5 2 <1 <1 <1 1 3 5 6 2
T WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW N NW NW NW
T WIND SPD 11 5 8 11 18 17 19 20 20 9 8 6 9 12 11 16 13
DISPERSION PR PR PR PR PR PR VP PR PR VP VP VP
ADI 8 4 4 5 34 61 93117 14 4 4 3 13 52 71107 6
MAX LVORI 5 6 6 6 4 1 1 1 3 4 5 5 4 1 1 1 3
STABILITY E E F F B B B B E F F F B B B B F
CEILING None None None None None None None None None
STA PRES 27.51 27.54 27.61 27.63 27.69 27.69 27.74 27.73
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 64 84 67 79 67 80 67 84
TEMP 84 76 68 67 83 75 70 68 77 71 69 68 78 72 68 69 81 74
DEWPT 60 61 60 61 64 64 64 66 70 68 66 67 70 69 66 67 70 69
RH 44 60 76 81 53 69 81 93 79 90 90 97 76 90 93 93 69 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC B1 B1 B2 B2 B2 OV B2 B2 B2 B2 B1 B1 B1 SC B1
POP 12HR 0 0 30 50 70 50 50 20 50
RAIN SHWRS SC SC SC SC NM SC SC SC SC IS IS SC
TSTMS SC IS SC IS 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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