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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri Jul 24 2026
NCZ006-250800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
401 PM EDT Fri Jul 24 2026
Date 07/24/26 Sat 07/25/26 Sun 07/26/26 Mon
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 76 62 85 64
TEMP 75 73 70 67 66 66 70 73 75 74 68 66 65 66 77 83 84 80 71 68 65 68
DEWPT 67 68 67 67 66 66 70 71 71 70 68 66 65 66 71 70 69 71 69 68 65 68
MIN/MAX RH 100 84 100 59 100
RH 76 84 90100100100100 93 87 87100100100100 82 65 61 74 93100100100
WIND DIR E N N N NE NE NE NE NE N N N N N NW N NW N N N N N
WIND SPD 3 0 0 0 1 2 4 4 3 0 0 0 0 0 2 3 1 0 0 0 0 0
CLOUDS OV OV B2 B2 OV B2 OV B1 B2 SC FW SC SC B1 FW FW FW FW FW FW FW FW
CLOUDS(%) 88 94 86 86 94 86 90 67 80 50 24 31 44 54 24 21 19 25 25 16 19 21
VSBY 10 7 6 1 1 1 7 7 10 10 9 8 2 2 6 7 7 7 7 10 10
POP 12HR 90 60 5 5 20
RAIN C L D D L
RAIN SHWRS SC IS IS IS
TSTMS IS IS IS
Obvis PF PF PF
MIX HGT 2 <1 <1 1 <1 1 1 2 2 <1 <1 <1 <1 <1 3 5 6 <1
T WIND DIR E E NE E E NE NE NE N NE NW W W W N N NW W
T WIND SPD 9 6 4 5 5 6 9 8 3 4 1 2 2 1 9 5 3 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 29 3 2 3 3 11 16 19 10 2 1 1 1 1 34 35 24 1
MAX LVORI 3 5 6 9 9 7 5 5 5 6 10 10 10 10 3 1 2 3
STABILITY B F F F F B C C B F G G F B A A A G
CEILING 2200 1200 700 1300 None None None None None
STA PRES 29.45 29.42 29.45 29.40 29.37 29.34 29.31 29.25
Date 07/27Tue 07/28/26Wed 07/29/26Thu 07/30/26Fri 07/31/26
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 88 69 90 68 89 66 86 66 87
TEMP 86 82 73 72 88 84 73 71 87 82 71 69 84 81 70 70 85 81
DEWPT 71 72 69 71 75 75 72 71 72 72 67 68 69 71 67 69 71 71
RH 61 72 87 97 66 74 97100 61 72 87 97 61 72 90 97 63 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC B1 B1 B1 FW FW FW SC FW FW SC FW FW SC SC
POP 12HR 5 10 40 50 20 10 10 10 20
RAIN SHWRS SC SC IS IS IS
TSTMS SC SC 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