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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Tue Jul 28 2026
VAZ018-282000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
631 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 86 65 81 61 82
TEMP 71 81 85 82 74 71 69 66 66 74 79 78 70 66 64 61 63 75 81 80 72
DEWPT 67 71 72 71 68 66 64 63 62 63 62 61 59 58 58 57 57 60 60 60 58
MAX/MIN RH 64 89 56 85 48
RH 87 72 65 69 82 84 84 90 87 69 56 56 68 75 81 87 81 60 49 51 61
WIND DIR W W W NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 6 9 10 9 9 8 6 8 10 10 9 10 9 6 6 6 8 8 8 8 6
WIND GUST 23 26 29 27 27 27 24 26 32 28 26 28 27 25 24 25 26 24 23 23 23
CLOUDS OV B1 B2 B1 SC FW FW FW FW FW FW FW FW FW SC FW FW FW FW FW FW
CLOUDS(%) 95 69 74 57 35 12 11 6 14 7 10 21 22 17 27 15 23 21 17 14 11
VSBY 9 9 10 10 10 9 9 10 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 50 20 0 0 0
RAIN SHWRS IS SC SC SC IS
TSTMS SC SC SC IS
MIX HGT 1 3 3 3 1 <1 <1 <1 2 3 5 5 2 <1 <1 <1 2 3 5 6 2
T WIND DIR SE SW W NW NW NW NW NW NW NW NW NW NW NW NW NW NW N N N N
T WIND SPD 5 26 37 28 24 12 9 9 25 28 27 28 23 18 19 12 17 21 19 17 16
DISPERSION PR PR PR PR PR PR PR PR PR
ADI 7 81121 87 16 8 4 6 49119157175 15 8 9 6 34 88111113 7
MAX LVORI 5 3 1 1 3 4 5 5 4 1 1 1 3 4 4 5 3 1 1 1 3
STABILITY C C C C E E F E B B B B E F F F B B B B F
CEILING 500 1600 None None None None None None None None
STA PRES 27.43 27.42 27.5 27.53 27.56 27.57 27.60 27.64 27.70 27.72
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 61 86 63 85 66 82 66 82
TEMP 63 64 83 76 66 65 83 76 69 67 80 73 69 67 80 74
DEWPT 57 58 60 60 59 60 62 62 63 65 68 67 66 67 69 68
RH 81 81 46 58 78 84 49 62 81 93 67 81 90100 69 82
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 B1 B1 B1
POP 12HR 0 0 5 20 50 70 50 50
RAIN SHWRS IS SC SC SC NM SC IS IS SC
TSTMS 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