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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Sun Jun 21 2026
NCZ001-220800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
231 PM EDT Sun Jun 21 2026
Date 06/21/26 Mon 06/22/26 Tue 06/23/26 Wed
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 62 77 61 70 55
TEMP 75 69 65 64 63 65 70 73 70 65 65 64 64 61 62 67 69 64 59 57 55 57
DEWPT 55 57 56 57 58 59 61 65 66 63 63 62 61 59 59 59 58 56 55 53 52 52
MIN/MAX RH 84 72 95 68 90
RH 50 66 73 78 84 81 73 76 87 93 93 93 90 93 90 75 68 75 87 86 90 83
WIND DIR SW S SW SW SW SW SW SW W W W NW NW NW NW NW NW NW NW NW NW N
WIND SPD 4 5 8 9 10 9 11 10 10 13 17 19 20 21 14 11 12 14 12 9 6 5
CLOUDS FW SC SC SC SC SC SC B2 B2 B2 B1 B1 B2 B1 B1 SC SC FW FW FW SC SC
CLOUDS(%) 22 37 33 50 48 31 35 81 80 75 63 57 72 52 51 30 30 19 25 23 31 26
VSBY 10 10 10 10 10 10 10 5 9 8 7 7 7 9 10 10 10 10
POP 12HR 5 90 80 30 0
RAIN SHWRS NM NM SC SC SC SC SC SC IS IS
TSTMS NM NM SC IS IS
MIX HGT 6 2 <1 <1 <1 1 4 4 3 2 <1 <1 1 2 3 4 4 2
T WIND DIR S SW S S S SW W SW W W W W NW NW NW NW N N
T WIND SPD 6 2 5 6 6 11 20 23 24 25 13 14 16 19 18 16 13 16
DISPERSION PR PR PR FR FR GD GD GD GD FR PR PR
ADI 48 1 4 6 6 20 75 85 78 28 12 13 14 34 41 58 51 22
MAX LVORI 1 3 3 4 4 3 3 3 4 4 5 5 5 4 4 3 1 3
STABILITY A F E D D B C C C D D D D D D C C D
CEILING None None None None 800 500 400 None None None
STA PRES 26.70 26.70 26.67 26.68 26.67 26.69 26.71 26.77 26.79
Date 06/24Thu 06/25/26Fri 06/26/26Sat 06/27/26Sun 06/28/26
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 75 59 75 60 75 61 76 63 79
TEMP 71 67 60 61 72 68 63 62 71 69 64 63 73 70 65 64 75 73
DEWPT 52 55 54 56 60 60 59 60 61 60 59 59 60 60 60 60 61 62
RH 51 65 81 84 66 76 87 93 71 73 84 87 64 71 84 87 62 68
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC B1 B1 SC SC B1 B2 SC SC SC B1 B1 SC B1 B1
POP 12HR 5 5 50 20 60 20 40 30 30
RAIN SHWRS SC SC IS IS SC NM IS IS SC SC SC IS SC SC
TSTMS SC IS IS SC IS IS SC 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