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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Thu Mar 12 2026
NCZ001-130800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
231 AM EDT Thu Mar 12 2026
Date 03/11/26 Thu 03/12/26 Fri 03/13/26 Sat
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 33 36 26 49 37
TEMP 49 36 27 30 32 30 28 27 27 30 38 45 48 44 43 41 40 38
DEWPT 48 35 27 21 15 14 15 14 14 15 19 23 25 27 29 31 32 31
MIN/MAX RH 100 45 59 39 77
RH 96 96100 69 49 51 58 57 57 53 46 41 40 51 57 67 73 76
WIND DIR NW NW NW NW NW NW NW W SW SW S SW SW W W W W NW
WIND SPD 25 37 34 28 27 21 12 8 10 14 23 24 25 23 21 21 18 13
CLOUDS OV OV OV SC CL CL CL FW CL FW FW SC SC FW FW FW FW SC
CLOUDS(%) 100 97 89 27 4 3 5 13 5 8 14 26 31 6 9 15 16 40
VSBY 7 3 2 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 100 100 0 0 0
RAIN D D
RAIN SHWRS
SNOW C
MIX HGT <1 1 1 3 4 2 <1 <1 <1 <1 2 4 4 1 2 1 <1 <1
T WIND DIR N NW NW NW NW NW NW W S S SW SW SW SW W W W NW
T WIND SPD 20 25 39 41 37 16 10 2 4 10 14 21 25 8 10 14 13 12
DISPERSION GD GD FR PR FR GD GD GD GD
ADI 19 33 63 97106 22 9 2 3 11 28 61 67 9 12 17 12 10
MAX LVORI 5 4 4 1 1 2 2 3 3 2 2 1 1 2 2 3 3 4
STABILITY D D D D D D D E E D D D D D D D D C
CEILING 200 200 None None None None None None None
STA PRES 26.50 26.59 26.67 26.74 26.74 26.72 26.64 26.66 26.69
Date 03/14Sun 03/15/26Mon 03/16/26Tue 03/17/26Wed 03/18/26
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 55 41 53 42 52 17 27 21 38
TEMP 53 49 45 43 50 52 53 51 36 28 22 18 24 25 22 23 35 34
DEWPT 34 37 36 38 43 45 49 47 30 17 10 6 4 5 7 8 15 20
RH 48 63 70 82 77 77 86 86 79 63 59 59 41 42 52 52 43 56
WIND SPD <15 <15 15> 15> 15> 15> 15> 15> <15
AVG CLOUDS B1 B1 SC SC SC B1 B2 B2 B2 B2 B1 SC FW FW FW SC SC B1
POP 12HR 0 0 20 60 60 10 10 5 10
RAIN SHWRS IS SC NM NM
SNOWSHWRS 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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