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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 PM EDT Fri Jul 11 2025
NCZ006-120800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
802 PM EDT Fri Jul 11 2025
Date 07/11/25 Sat 07/12/25 Sun 07/13/25 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 71 93 72 92 71
TEMP 77 74 72 75 87 91 90 83 77 75 73 75 85 90 89 82 76 74 73 74
DEWPT 71 72 71 73 76 75 75 75 75 73 72 73 77 77 76 77 75 74 72 74
MIN/MAX RH 99 61 97 63 100
RH 82 93 97 94 70 60 62 77 94 94 97 94 77 66 66 85 97100 97100
WIND DIR N N N N W S S SW S N N N NW S SW NW S N N NW
WIND SPD 0 0 0 0 1 2 2 1 1 0 0 0 1 2 2 1 1 0 0 1
CLOUDS FW FW FW FW SC SC SC B1 SC SC SC FW SC B2 B2 B1 B1 B1 B1 B1
CLOUDS(%) 17 19 25 23 37 43 47 56 35 33 26 24 33 73 73 55 55 69 61 54
VSBY 10 10 1 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 30 20 60 30
RAIN SHWRS IS IS IS NM NM SC SC IS
TSTMS IS IS IS SC NM SC SC
Obvis PF
MIX HGT <1 <1 <1 <1 2 5 4 <1 <1 <1 <1 <1 2 5 3 <1
T WIND DIR S S S SW S SW SW SW SE SW SW W N NW W W
T WIND SPD 3 3 2 1 4 5 4 6 2 3 2 1 8 3 3 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 1 1 15 34 22 3 1 2 1 1 24 20 11 1
MAX LVORI 7 8 10 7 3 1 2 4 8 7 8 8 3 3 3 5
STABILITY G G G A A A A F G G G A A B B F
CEILING None None None None None None None 4600 4500
STA PRES 29.38 29.39 29.41 29.37 29.37 29.38 29.41 29.36
Date 07/14Tue 07/15/25Wed 07/16/25Thu 07/17/25Fri 07/18/25
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 91 71 88 71 87 71 88 72 90
TEMP 89 82 73 73 86 79 74 74 85 80 74 74 86 81 74 74 88 82
DEWPT 76 76 73 73 77 76 73 74 78 77 74 74 79 77 74 74 79 77
RH 66 82100100 75 91 97100 80 91100100 80 88100100 75 85
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B2 B1 B1 B1 B1 SC B1 B1 B1 B1 B1 B1 B2 SC SC SC B2
POP 12HR 60 40 50 20 50 20 60 20 60
RAIN SHWRS IS NM SC IS IS SC IS IS IS SC IS IS NM IS IS NM
TSTMS NM SC IS SC IS SC IS 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
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