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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 AM EDT Fri Jul 24 2026
NCZ001-242000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
931 AM EDT Fri Jul 24 2026
Date Fri 07/24/26 Sat 07/25/26 Sun 07/26/26
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 63 59 67 59 74
TEMP 61 63 63 62 62 61 61 60 61 65 67 64 62 61 61 59 64 70 72 67
DEWPT 59 60 61 61 61 61 60 60 60 59 60 59 59 59 59 59 61 62 62 61
MAX/MIN RH 91 100 77 98 69
RH 93 90 93 97 97100 97100 97 81 78 84 90 93 93100 90 76 71 81
WIND DIR SE S S S S SW W W W NW NW NW W W NW NW NW NW NW NW
WIND SPD 4 4 5 4 4 3 3 4 5 5 6 5 5 8 9 8 4 5 6 6
CLOUDS B2 B2 B2 OV B2 B2 B2 B2 B1 B1 B1 SC SC SC SC SC SC SC SC SC
CLOUDS(%) 81 87 75 88 84 75 74 77 56 51 57 35 42 37 39 36 34 50 50 28
VSBY 7 6 6 6 7 7 7 10 10 7 7 10 10 10 10 10 10 7 7 10
POP 12HR 70 70 40 10 30
RAIN SHWRS SC NM SC NM SC IS IS SC SC SC SC
TSTMS SC SC IS IS IS SC SC
MIX HGT <1 <1 1 <1 <1 <1 <1 <1 2 3 3 1 <1 <1 <1 <1 3 4 4 1
T WIND DIR E E E E E N W NW NW NW NW NW NW NW NW NW NW NW NW NW
T WIND SPD 8 6 4 4 2 0 2 5 12 6 9 9 5 8 8 6 6 9 9 12
DISPERSION VP VP VP VP PR PR PR PR PR
ADI 9 8 6 3 2 0 1 4 33 23 30 4 4 5 5 7 26 44 42 6
MAX LVORI 8 8 8 9 10 9 8 9 4 3 3 5 6 6 6 8 4 3 1 4
STABILITY C C C E E F F C C C C F E E E B A A B F
CEILING 600 600 500 500 None None None None None
STA PRES 26.80 26.80 26.77 26.78 26.75 26.73 26.70 26.69 26.64
Date Mon 07/27/26Tue 07/28/26Wed 07/29/26Thu 07/30/26
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 77 63 78 64 76 60 74
TEMP 62 61 74 70 65 64 76 71 67 64 73 69 63 60 72 67
DEWPT 60 60 62 63 61 61 64 65 63 62 62 61 59 58 59 60
RH 93 97 66 78 87 90 66 81 87 93 68 76 87 93 64 78
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC SC B1 B1 SC B1 B1 FW FW FW SC
POP 12HR 5 20 10 30 40 30 10 10
RAIN SHWRS IS SC SC IS SC SC
TSTMS IS 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