
Wildfires and poor air quality continue for the Pacific Northwest, Rockies and extended into the Plains. Severe thunderstorms possible for the northern Plains and upper Midwest on Monday along a frontal boundary. Another boundary will focus showers and thunderstorms for the eastern seaboard with localized heavy rainfall possible. For Alaska, a strong Bering Sea storm will bring winds and rainfall. Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
601 PM EDT Sun Aug 2 2026
NCZ001-030800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
601 PM EDT Sun Aug 2 2026
Date 08/02/26 Mon 08/03/26 Tue 08/04/26 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 71 61 69 62
TEMP 66 65 64 63 62 65 67 67 63 63 62 62 61 64 68 67 63 63 63 63 63
DEWPT 65 63 63 62 62 64 65 66 63 63 62 62 61 63 64 65 63 63 63 63 62
MIN/MAX RH 99 94 100 87 100
RH 97 93 97 97100 97 93 97100100100100100 97 87 93100100100100 97
WIND DIR S SW W W W SW SW W E NE E E E E SE SE E E SE E SE
WIND SPD 5 4 4 4 3 3 3 3 2 4 5 5 6 5 5 6 5 6 8 5 5
CLOUDS B1 B2 B1 SC B1 SC B1 B1 B2 B1 B2 B2 B2 B1 B2 B2 B1 B1 B1 B2 B2
CLOUDS(%) 60 80 57 50 54 50 69 65 79 54 72 80 80 63 86 86 64 67 68 73 74
VSBY 10 6 5 2 2 10 10 10 10 9 8 10 6 6 6 6 6 6 7 7 6
POP 12HR 60 70 40 80 40
RAIN SHWRS NM SC IS NM NM SC IS SC SC O O SC SC IS IS SC
TSTMS IS SC SC IS IS SC SC IS
MIX HGT <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 2 2 1
T WIND DIR S S W NW NW NW SW NW N N NE E E E SE SE E
T WIND SPD 9 5 5 4 5 3 2 1 5 6 9 6 6 11 5 8 3
DISPERSION PR VP VP VP VP VP PR PR PR PR PR PR
ADI 6 4 4 3 4 11 9 3 3 5 6 5 5 23 16 20 2
MAX LVORI 8 9 9 9 9 6 5 6 9 9 8 9 9 5 4 5 9
STABILITY E E E E C B B B F E E E C C C C E
CEILING 300 None 1900 400 400 400 500 500 4900
STA PRES 26.54 26.56 26.61 26.61 26.66 26.68 26.73 26.73
Date 08/05Thu 08/06/26Fri 08/07/26Sat 08/08/26Sun 08/09/26
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 70 63 72 63 72 63 73 62 72
TEMP 69 67 65 63 69 66 63 63 70 66 64 63 70 66 64 62 70 65
DEWPT 65 64 63 63 65 64 63 63 66 64 63 63 66 64 63 62 65 64
RH 87 90 93100 87 93100100 87 93 97100 87 93 97100 84 97
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 OV SC SC B1 B2 B1 SC B1 B2 B1 SC B1 B2 B1 B1 B1 B2
POP 12HR 80 10 80 20 80 20 80 20 60
RAIN SHWRS SC O SC O IS SC O IS SC O IS SC NM
TSTMS IS SC SC SC IS IS SC IS 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