
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
801 PM EDT Sun Aug 2 2026
VAZ012-030800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
801 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 66 81 62 79 63
TEMP 68 67 66 67 73 76 76 72 65 63 63 64 72 75 78 72 66 64 63 65
DEWPT 66 65 64 65 68 67 67 67 65 63 63 64 68 68 68 67 65 64 63 65
MIN/MAX RH 96 74 100 69 100
RH 93 93 93 93 84 74 74 84100100100100 87 79 71 84 97100100100
WIND DIR W W W W W W NW N N N E E E E E SE SE E SE SE
WIND SPD 2 2 2 2 3 3 3 2 1 1 1 2 2 2 2 2 1 1 1 1
CLOUDS B2 B1 B2 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B2 B1 B2 B2
CLOUDS(%) 78 63 70 52 51 63 51 63 53 62 87 87 73 75 75 55 73 66 75 70
VSBY 8 6 3 2 10 10 10 10 8 5 10 7 7 6 6 7 7 10 10 7
POP 12HR 60 70 20 60 20
RAIN SHWRS SC SC NM SC IS SC SC NM NM IS IS SC
TSTMS IS SC SC IS IS SC SC
Obvis PF PF
MIX HGT <1 <1 <1 <1 3 3 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR S SW W NW NW NW NW N N NE NE E E SE E SE
T WIND SPD 4 4 3 9 8 6 5 8 8 5 4 10 14 8 8 9
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 2 10 28 29 21 4 4 3 2 11 37 28 27 4
MAX LVORI 9 9 10 8 4 3 3 5 9 9 9 7 4 3 3 5
STABILITY F F F B B B B F F F F B B B B F
CEILING 700 700 None 1200 None 0 600 2200 1700
STA PRES 27.08 27.09 27.15 27.16 27.21 27.23 27.28 27.27
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 80 63 82 63 83 64 83 63 82
TEMP 77 74 66 65 78 73 65 66 79 74 65 66 79 74 65 65 78 73
DEWPT 69 68 65 65 69 69 65 66 69 68 65 66 69 69 65 65 69 69
RH 76 82 97100 74 87100100 72 82100100 72 84100100 74 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 SC SC B1 B2 SC SC B1 B2 B1 SC B1 B2 SC SC B1 B2
POP 12HR 80 5 70 10 60 20 70 20 60
RAIN SHWRS SC O SC NM SC NM IS SC NM IS SC NM
TSTMS IS SC IS SC 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