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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Thu Jul 23 2026
NCZ003-240800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
231 PM EDT Thu Jul 23 2026
Date 07/23/26 Fri 07/24/26 Sat 07/25/26 Sun
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 62 73 63 79 63
TEMP 71 68 66 65 64 64 68 69 71 71 68 67 66 66 72 75 78 74 69 66 64 67
DEWPT 68 67 66 64 63 64 68 69 69 69 68 66 65 66 71 71 71 71 68 66 64 67
MIN/MAX RH 100 91 100 80 100
RH 90 97100 97 97100100100 93 93100 97 97100 97 87 79 90 97100100100
WIND DIR E E N N N NE E E E N N N N N N S SW N N N N NW
WIND SPD 3 2 0 0 0 1 3 4 3 0 0 0 0 0 0 2 2 0 0 0 0 1
CLOUDS B2 B2 OV OV OV B2 B2 B2 B2 B2 B2 OV OV OV OV B2 B2 B1 B1 B1 SC SC
CLOUDS(%) 77 73 90 93 90 85 77 87 81 82 83 91 90 89 90 80 80 52 63 55 48 36
VSBY 8 7 7 6 5 5 6 8 6 7 10 10 10 10 10 10 10 10
POP 12HR 50 30 50 70 30
RAIN SHWRS SC SC SC SC SC SC IS SC SC SC SC SC NM NM SC SC IS IS
TSTMS IS IS SC SC IS
Obvis PF PF PF
MIX HGT 2 <1 <1 <1 <1 <1 2 2 2 1 <1 <1 <1 <1 2 2 1 <1
T WIND DIR NE NE NE NE NE NE NE NE NE NE NE NE N N N NW NW NW
T WIND SPD 9 10 9 8 6 9 9 9 5 6 5 3 3 3 3 6 5 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 23 5 4 4 3 11 21 23 16 3 3 2 2 4 7 15 10 3
MAX LVORI 4 7 9 8 8 7 5 5 5 8 9 10 10 9 6 4 4 6
STABILITY B F F F F B B C B F F F F B A B B F
CEILING 600 1400 600 600 600 600 600 6000 3400 4500
STA PRES 28.23 28.26 28.23 28.25 28.21 28.20 28.18 28.18 28.13
Date 07/26Mon 07/27/26Tue 07/28/26Wed 07/29/26Thu 07/30/26
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 84 64 86 66 90 67 87 64 85
TEMP 81 77 67 68 83 80 69 71 86 83 72 71 84 80 68 68 83 79
DEWPT 71 72 66 67 70 72 67 68 72 73 68 68 69 69 63 65 67 69
RH 72 85 97 97 65 77 93 90 63 72 87 90 61 69 84 90 59 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC FW SC SC SC SC SC SC SC SC SC SC FW SC FW SC
POP 12HR 30 5 5 10 10 20 20 10 20
RAIN SHWRS SC IS IS IS
TSTMS 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