Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sun Aug 30 2026
NCZ001-310800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
231 AM EDT Sun Aug 30 2026
Date 08/29/26 Sun 08/30/26 Mon 08/31/26 Tue
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 61 73 61 77 63
TEMP 63 62 67 72 71 65 64 64 63 63 70 75 74 67 66 65 64 65
DEWPT 61 61 63 63 64 63 62 61 61 61 62 62 63 63 62 61 61 61
MIN/MAX RH 100 74 94 63 90
RH 93 97 87 73 79 93 93 90 93 93 76 64 69 87 87 87 90 87
WIND DIR S SW S S S S SW W NW NW NW NW NW W W W NW NW
WIND SPD 3 3 2 3 3 3 4 4 4 6 3 2 2 1 4 5 5 6
CLOUDS B1 SC SC B1 B1 SC FW FW FW FW FW SC SC SC FW FW CL CL
CLOUDS(%) 60 44 35 56 51 41 19 18 17 14 24 40 32 31 20 7 3 3
VSBY 7 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 30 0 20 0
RAIN SHWRS SC SC IS
TSTMS SC SC IS
Obvis PF PF
MIX HGT <1 <1 3 4 3 <1 <1 <1 <1 <1 4 5 5 <1
T WIND DIR SE SE NE NW S S S SW W NW NW NW NW NW
T WIND SPD 5 2 1 1 2 4 3 2 3 13 14 8 8 6
DISPERSION VP VP VP VP VP VP VP PR PR
ADI 3 2 4 6 8 2 2 1 2 14 69 52 47 3
MAX LVORI 8 9 5 3 4 6 7 7 7 5 3 1 1 5
STABILITY F B A A B G F F F B A A A G
CEILING 16700 None None None None None None None
STA PRES 26.90 26.92 26.87 26.88 26.87 26.90 26.86
Date 09/01Wed 09/02/26Thu 09/03/26Fri 09/04/26Sat 09/05/26
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 77 64 78 66 80 65 78 63 75
TEMP 77 68 66 66 78 72 67 67 77 71 67 66 75 69 65 64 72 67
DEWPT 63 63 62 61 62 64 62 62 64 64 62 62 63 63 62 61 62 60
RH 62 84 87 84 58 76 84 84 64 79 84 87 66 81 90 90 71 78
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW FW FW SC SC FW FW B1 SC FW SC B1 SC SC SC B1
POP 12HR 10 0 10 0 50 20 50 20 30
RAIN SHWRS SC IS IS SC IS IS SC
TSTMS SC IS IS 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