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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sun Jul 12 2026
VAZ046-130800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
231 AM EDT Sun Jul 12 2026
Date 07/11/26 Sun 07/12/26 Mon 07/13/26 Tue
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 70 80 64 76 62
TEMP 72 73 77 79 77 73 70 69 67 67 70 74 74 72 68 65 63 66
DEWPT 70 71 72 73 72 71 70 69 67 67 70 70 69 68 67 65 63 66
MIN/MAX RH 95 81 100 84 100
RH 93 93 85 82 85 93100100100100100 87 84 87 97100100100
WIND DIR N NE NE NE NE NE E NE NE NE NE NE E E NE NE N NE
WIND SPD 3 5 6 5 6 5 4 4 5 6 8 9 8 5 4 3 4 4
CLOUDS B2 B2 OV OV OV OV B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 SC SC
CLOUDS(%) 85 82 98 97 93 89 80 85 83 87 80 77 87 54 57 52 43 32
VSBY 8 9 10 10 9 8 7 7 8 10 10 10 10 10 10 10 10 10
POP 12HR 40 60 70 70 10
RAIN SHWRS IS SC SC SC NM NM NM NM NM SC NM IS
TSTMS IS SC SC SC SC IS
MIX HGT <1 1 2 2 2 1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1
T WIND DIR N NE NE E E E E E NE NE E E E SW W NW NW N
T WIND SPD 4 9 14 10 10 12 12 12 13 11 12 11 5 2 1 1 2 0
DISPERSION VP PR VP VP PR PR VP VP VP
ADI 2 13 34 24 24 8 8 8 9 12 29 35 24 2 1 1 2 0
MAX LVORI 6 5 4 3 4 6 8 8 8 7 4 4 4 6 10 10 10 10
STABILITY F C C B C E E E E C C C B E E F E A
CEILING 1700 500 4300 1500 1200 1300 8100 None None
STA PRES 29.33 29.41 29.41 29.44 29.45 29.50 29.48 29.48 29.46
Date 07/14Wed 07/15/26Thu 07/16/26Fri 07/17/26Sat 07/18/26
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 85 66 94 71 94 70 92 70 92
TEMP 83 80 67 70 92 88 73 75 93 88 74 74 90 85 72 73 90 85
DEWPT 67 69 66 67 69 70 68 69 70 71 68 68 67 68 67 68 68 69
RH 59 69 97 90 47 55 84 82 47 57 82 82 47 57 84 84 49 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW CL CL CL CL FW FW FW FW SC SC SC SC SC SC
POP 12HR 5 5 0 0 0 10 20 10 20
RAIN SHWRS IS IS IS
TSTMS 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