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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Fri Jul 31 2026
NCZ003-312000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 AM EDT Fri Jul 31 2026
Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26
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 83 67 78
TEMP 77 82 84 78 71 68 66 69 76 79 79 76 73 70 69 69 72 74 75 74
DEWPT 61 62 63 66 63 61 59 63 68 70 71 71 69 68 68 69 72 74 75 73
MAX/MIN RH 48 81 74 100 95
RH 58 51 49 67 76 78 78 81 76 74 77 85 87 93 97100100100100 97
WIND DIR N S S N N N N N S S S S S S SE SE S S S S
WIND SPD 0 2 3 0 0 0 0 0 4 9 6 4 3 4 4 3 5 6 5 2
WIND GUST 14
CLOUDS FW SC SC FW SC SC SC B1 B2 B2 B1 B2 OV OV OV OV OV OV OV B2
CLOUDS(%) 12 32 31 22 45 44 40 57 85 77 68 84 92 90 89 88 91 90 90 86
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 50 80 80
RAIN SHWRS IS SC SC SC NM NM NM NM O O NM
TSTMS IS SC IS IS IS IS SC SC SC
MIX HGT 4 6 5 <1 <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 1 1 2 2 <1
T WIND DIR S SW SW S N S NW S S S S S S S S S S S S W
T WIND SPD 2 4 3 5 0 1 1 2 6 17 20 10 11 16 9 8 13 16 12 8
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 13 31 23 3 0 1 1 2 18 67 66 7 5 11 6 11 26 44 33 4
MAX LVORI 2 1 2 3 4 4 4 5 3 3 3 4 6 5 6 7 4 4 4 9
STABILITY A A A G F F G B C C C E F E E B C C C F
CEILING None None None None 1500 2400 1800 300 300 1500
STA PRES 28.15 28.11 28.10 28.07 28.07 27.99 27.96 27.93 27.94 27.95
Date Mon 08/03/26Tue 08/04/26Wed 08/05/26Thu 08/06/26
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 67 81 66 81 66 81 67 83
TEMP 70 70 76 76 68 69 76 75 69 69 77 76 69 70 80 77
DEWPT 70 70 74 73 68 69 74 74 69 69 74 74 69 70 74 74
RH 100100 94 90100100 94 97100100 90 94100100 82 90
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B1 B1 B1 B2 B1 B1 B1 B2 SC SC SC B2
POP 12HR 80 70 30 70 30 60 20 60
RAIN SHWRS NM SC SC O SC SC NM SC SC NM IS IS NM
TSTMS SC IS SC SC IS SC IS SC IS 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