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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sat Jul 25 2026
VAZ018-252000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 AM EDT Sat Jul 25 2026
Date Sat 07/25/26 Sun 07/26/26 Mon 07/27/26
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 75 62 78 63 88
TEMP 68 73 74 68 65 63 63 65 73 76 77 73 68 65 64 67 81 86 85 75
DEWPT 66 66 66 66 64 62 62 64 66 67 67 67 65 64 63 63 67 67 67 68
MAX/MIN RH 75 96 72 98 51
RH 93 79 76 93 97 97 97 97 79 74 71 81 90 97 97 87 63 53 55 79
WIND DIR SE SE S SW NW W NW NW N W W NW NW W W W NW W W W
WIND SPD 3 4 4 3 2 2 2 2 3 3 4 4 1 1 2 2 2 3 4 2
CLOUDS B2 SC SC SC SC FW FW SC FW SC SC SC SC FW SC SC SC SC SC B1
CLOUDS(%) 81 43 44 47 32 13 21 29 15 34 35 35 27 19 38 48 46 49 46 56
VSBY 7 10 10 10 1 1 10 1 10 10 10 10 10 10 10 10 10 7 7 7
POP 12HR 20 10 20 5 20
RAIN SHWRS IS IS IS IS
TSTMS IS IS IS
Obvis PF PF PF
MIX HGT 2 3 3 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 6 5 <1
T WIND DIR SE W W W S W W NW N NW SW NW E NE NW NW NW W NW NW
T WIND SPD 5 4 4 6 1 2 2 1 5 3 6 4 3 1 2 4 10 12 10 5
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 12 19 16 3 1 1 1 1 25 23 43 2 2 1 1 4 43 88 64 3
MAX LVORI 6 4 4 6 9 8 8 7 3 3 3 5 7 9 9 7 3 2 3 4
STABILITY B A A F G G G A A A A F G G G A A A A F
CEILING 100 None None None None None None None None None
STA PRES 27.88 27.82 27.80 27.76 27.74 27.68 27.69 27.69 27.69 27.64
Date Tue 07/28/26Wed 07/29/26Thu 07/30/26Fri 07/31/26
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 68 87 65 82 61 83 62 85
TEMP 70 71 85 76 69 67 81 73 65 64 82 74 64 66 84 75
DEWPT 65 67 72 69 66 65 64 62 60 60 61 61 59 60 63 63
RH 84 87 65 79 90 93 56 68 84 87 49 64 84 81 49 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 OV SC SC SC SC FW FW FW FW FW FW SC SC
POP 12HR 50 70 30 20 20 10 5 20
RAIN SHWRS IS SC SC NM SC IS IS IS
TSTMS IS SC SC IS 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