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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
531 AM EDT Thu Jun 18 2026
NCZ001-182000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
531 AM EDT Thu Jun 18 2026
Date Thu 06/18/26 Fri 06/19/26 Sat 06/20/26
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 77 60 71 54 73
TEMP 65 71 74 76 71 66 63 62 62 63 68 69 63 59 56 55 56 63 70 72 67
DEWPT 60 61 63 63 61 62 60 59 61 61 59 56 53 53 52 52 50 49 50 51 53
MAX/MIN RH 64 97 62 89 45
RH 84 71 69 64 71 87 90 90 97 93 73 63 70 80 86 90 80 60 49 48 61
WIND DIR W W W W W W W NW NW NW NW NW NW NW NW NW NW NW W W W
WIND SPD 21 21 16 11 12 13 9 10 16 14 14 14 16 13 13 13 13 11 9 9 8
WIND GUST 32 34 26
CLOUDS SC B1 B1 B2 OV OV OV OV B1 B1 SC CL CL SC FW SC FW FW FW FW SC
CLOUDS(%) 40 53 68 84 94 90 88 89 54 56 47 5 5 28 25 26 23 18 19 16 30
VSBY 10 10 8 8 7 7 7 6 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 70 90 30 0 0
RAIN SHWRS IS SC NM O NM NM NM IS SC
TSTMS SC NM IS IS
MIX HGT 2 4 5 3 1 <1 <1 <1 1 2 4 5 1 <1 <1 <1 1 3 5 5 <1
T WIND DIR W W W W W W SW S SE NW NW NW NW NW NW NW NW W NW NW NW
T WIND SPD 25 32 25 25 16 4 6 8 1 6 21 26 17 8 6 6 9 6 10 9 6
DISPERSION FR FR PR FR GD FR FR FR PR
ADI 57 84 76 77 14 4 6 7 2 14 85107 19 7 6 6 12 23 58 56 5
MAX LVORI 4 3 1 1 3 5 5 5 8 5 3 1 3 4 5 5 4 2 1 1 3
STABILITY C D D C D D D D D D C C D D D D C C B B E
CEILING None 9300 700 300 None None None None None None
STA PRES 26.62 26.60 26.62 26.58 26.58 26.61 26.69 26.68 26.71 26.67
Date Sun 06/21/26Mon 06/22/26Tue 06/23/26Wed 06/24/26
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 58 76 62 70 58 71 57 72
TEMP 59 61 73 69 64 63 67 65 62 59 68 66 59 58 69 66
DEWPT 53 53 56 61 61 62 66 63 61 58 56 56 55 53 57 59
RH 80 75 55 76 90 97 97 93 97 96 65 70 87 83 66 78
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW B1 B1 B1 OV OV B2 B1 B1 SC SC SC B1 B1
POP 12HR 5 40 30 70 70 30 10 30
RAIN SHWRS SC SC SC NM NM NM SC SC IS IS SC
TSTMS SC 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