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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun Jun 21 2026
NCZ001-212000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
801 AM EDT Sun Jun 21 2026
Date Sun 06/21/26 Mon 06/22/26 Tue 06/23/26
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 76 61 75 59 71
TEMP 69 73 75 71 66 64 63 64 70 73 74 70 65 63 61 62 62 68 70 65
DEWPT 51 51 53 54 56 57 57 58 60 63 63 62 62 62 61 59 59 59 57 55
MAX/MIN RH 44 87 69 100 63
RH 53 46 46 55 70 78 81 81 71 71 69 76 90 97100 90 90 73 63 70
WIND DIR W SW SW SW S SW SW W W W W W W W W NW NW NW NW NW
WIND SPD 3 5 4 2 5 5 5 5 10 11 11 11 12 13 13 19 13 10 11 13
WIND GUST 16 21 21 24 24 25
CLOUDS FW FW FW SC SC SC FW FW SC OV B2 B2 B2 B2 B2 B1 B1 SC SC SC
CLOUDS(%) 8 21 19 32 28 29 24 19 35 94 82 84 73 70 71 61 55 50 50 34
VSBY 10 10 10 10 10 10 10 10 10 3 3 8 10 10 5 9 10 9 10 10
POP 12HR 0 0 90 40 30
RAIN SHWRS O NM SC SC SC SC SC SC SC SC
TSTMS NM NM SC IS IS
MIX HGT 4 6 6 1 <1 <1 <1 1 4 3 2 2 <1 <1 <1 1 3 4 4 2
T WIND DIR W SW SW SW S SW SW W SW SW SW SW W W W NW NW NW NW NW
T WIND SPD 5 4 8 9 4 3 3 9 17 12 11 6 11 18 18 19 19 13 12 11
DISPERSION VP PR PR PR FR FR FR FR FR
ADI 30 33 55 4 2 2 2 14 82 31 24 8 10 16 16 31 45 65 47 13
MAX LVORI 1 1 1 3 3 4 5 4 3 3 3 4 5 5 5 4 4 3 1 3
STABILITY A A A G F F F A B D D D D D D D D B C D
CEILING None None None None None 500 1000 400 None None
STA PRES 26.72 26.69 26.71 26.70 26.70 26.68 26.67 26.67 26.73 26.74
Date Wed 06/24/26Thu 06/25/26Fri 06/26/26Sat 06/27/26
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 55 74 59 75 59 76 60 76
TEMP 57 57 71 68 61 61 72 68 62 61 72 69 63 62 73 70
DEWPT 53 51 52 55 54 56 59 59 59 59 60 59 59 58 59 59
RH 86 80 51 63 78 84 64 73 90 93 66 70 87 87 62 68
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC B1 B1 B1 SC SC B1 SC SC SC B1
POP 12HR 5 10 10 50 30 40 10 40
RAIN SHWRS SC SC SC IS SC IS SC
TSTMS IS SC SC IS SC 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