
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
VAZ018-030800-
RAWS 444002
37.56N 80.18W Elev. 2702 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 68 84 66 80 67
TEMP 70 69 68 69 75 79 78 72 69 68 67 67 74 79 78 71 69 68 67 68
DEWPT 67 67 65 67 69 68 69 70 67 66 65 66 69 70 70 69 67 66 66 67
MIN/MAX RH 98 68 99 74 97
RH 90 93 90 93 82 69 74 93 93 93 93 97 84 74 76 93 93 93 97 97
WIND DIR SW W W NW W W NW N N NE NE NE E E E SE E E E E
WIND SPD 4 3 3 3 3 4 4 3 2 2 2 3 3 4 4 2 1 1 1 1
CLOUDS B2 B2 B2 SC SC SC SC SC B1 B2 B2 OV B2 B2 B1 B2 B1 B2 B2 B2
CLOUDS(%) 81 76 74 49 49 42 43 44 65 76 87 89 79 73 65 75 68 72 74 72
VSBY 6 3 2 1 10 10 10 10 10 9 6 7 7 6 6 7 7 7 7 7
POP 12HR 40 50 50 50 30
RAIN SHWRS SC IS SC SC SC SC SC SC SC SC SC SC IS IS IS
TSTMS SC SC SC SC
MIX HGT <1 <1 <1 <1 3 4 3 <1 <1 <1 <1 <1 2 3 3 1
T WIND DIR S S SW NW NW NW NW NW N NE NE NE NE E E E
T WIND SPD 8 5 5 5 9 6 8 11 6 6 12 11 8 9 8 9
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 4 3 3 6 32 35 31 5 3 3 6 12 22 27 25 4
MAX LVORI 8 8 8 8 3 3 3 6 6 6 7 5 4 3 3 6
STABILITY F F F B B A B F F F F B B C C F
CEILING 1300 500 None None 2200 2000 2300 2300 1500
STA PRES 27.59 27.60 27.65 27.66 27.74 27.78 27.84 27.81
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 81 67 84 68 85 68 84 68 83
TEMP 80 75 70 69 82 75 70 70 83 75 69 70 83 75 69 69 82 74
DEWPT 72 71 68 68 72 72 68 68 72 71 67 68 72 71 67 68 71 71
RH 77 87 93 97 72 90 93 93 70 87 93 93 70 87 93 97 69 90
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B1 B1 B2 SC SC SC B2 B1 SC SC B2 SC SC B1 B1
POP 12HR 70 20 70 20 60 20 60 30 50
RAIN SHWRS IS NM IS IS NM IS NM IS IS NM SC IS SC
TSTMS IS SC IS IS SC IS SC 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