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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Fri Jun 19 2026
NCZ005-200800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
231 AM EDT Fri Jun 19 2026
Date 06/18/26 Fri 06/19/26 Sat 06/20/26 Sun
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 67 86 59 86 63
TEMP 68 70 76 83 84 78 68 63 60 64 76 84 85 81 70 65 63 68
DEWPT 68 69 71 66 60 58 56 56 55 58 57 56 56 58 58 58 58 60
MIN/MAX RH 100 45 85 36 83
RH 100 97 85 57 44 50 65 78 84 81 52 38 37 46 66 78 84 76
WIND DIR SW SW NW NW NW NW NW NW NW NW NW W W W W W NW N
WIND SPD 4 4 6 10 11 6 5 3 3 2 4 5 6 3 2 1 1 1
CLOUDS OV OV OV FW FW FW FW FW B1 SC SC SC FW FW FW CL FW FW
CLOUDS(%) 100100 91 14 12 8 16 23 56 44 41 30 11 12 9 5 8 6
VSBY 6 6 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 80 30 0 0 0
RAIN SHWRS O SC
TSTMS
Obvis PF PF
MIX HGT <1 1 2 5 6 <1 <1 <1 <1 <1 4 6 8 <1
T WIND DIR SE E NW NW NW NW NW NW NW W N W W W
T WIND SPD 6 5 10 20 20 12 6 3 2 1 4 5 8 9
DISPERSION VP PR PR VP VP VP VP VP VP
ADI 6 9 29117143 6 3 2 1 1 25 45 66 4
MAX LVORI 6 8 4 1 1 2 3 4 5 4 2 1 1 2
STABILITY D C C B B F F G G A A A B G
CEILING 2100 600 None None None None None None
STA PRES 29.04 29.05 29.09 29.22 29.27 29.28 29.22
Date 06/21Mon 06/22/26Tue 06/23/26Wed 06/24/26Thu 06/25/26
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 91 70 91 69 88 64 88 65 90
TEMP 89 87 74 74 90 84 73 71 85 82 68 68 85 83 69 69 87 83
DEWPT 59 62 64 67 68 70 68 66 63 62 60 60 60 61 62 63 62 63
RH 37 43 71 79 49 63 84 84 48 51 76 76 43 47 78 81 43 51
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC SC B1 B2 B1 SC FW SC SC SC SC SC SC SC FW SC
POP 12HR 0 10 80 50 20 10 20 20 20
RAIN SHWRS IS O SC IS IS IS IS
TSTMS NM SC IS IS 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