
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
VAZ024-030800-
RAWS 441631
37.63N 79.51W Elev. 865 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 71 87 67 84 67
TEMP 73 71 71 72 78 84 84 78 72 69 67 68 77 83 84 78 71 69 67 69
DEWPT 71 69 69 70 72 70 70 72 71 69 67 68 70 70 70 71 70 69 67 69
MIN/MAX RH 95 62 100 62 100
RH 93 93 93 93 82 63 63 82 97100100100 79 65 63 79 97100100100
WIND DIR S S S SW SW SW S N N N N N NE E E E N N N N
WIND SPD 3 2 1 1 3 4 3 3 1 1 2 2 2 3 3 1 0 0 0 0
CLOUDS B2 B2 OV B2 B1 B1 B1 B1 B1 B2 B2 OV B2 B2 B1 B1 B1 B1 B2 B2
CLOUDS(%) 83 87 93 71 56 53 51 61 65 75 73 88 73 72 62 62 68 69 77 72
VSBY 4 3 3 2 9 10 10 10 10 9 10 7 7 6 6 6 6 7 7 7
POP 12HR 60 40 50 40 40
RAIN SHWRS SC IS SC SC SC SC IS IS SC SC SC SC SC SC IS
TSTMS SC SC SC SC IS
MIX HGT <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR S S S SW W NW NW NW NE N NE NE NE E E E
T WIND SPD 8 6 6 5 3 5 3 3 5 5 10 11 11 9 6 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 4 3 3 6 12 35 14 2 3 3 5 12 36 36 24 3
MAX LVORI 9 9 9 8 4 1 2 5 8 9 9 5 3 3 2 4
STABILITY F F F B B A B F F F F B B B B F
CEILING 2300 0 1000 None 3100 3300 2900 2900 1800
STA PRES 28.29 28.30 28.34 28.34 28.43 28.48 28.54 28.52
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 86 68 88 69 89 69 89 68 88
TEMP 84 80 71 70 87 81 71 70 87 81 71 71 88 81 71 69 86 80
DEWPT 72 73 71 70 73 73 71 70 73 73 71 71 73 73 70 69 72 73
RH 67 79100100 63 77100100 63 77100100 61 77 97100 63 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B1 B1 B2 SC SC SC B1 B1 SC SC B1 SC SC B1 B1
POP 12HR 70 20 60 20 50 20 50 20 40
RAIN SHWRS IS NM IS NM IS SC IS SC IS IS SC
TSTMS IS SC IS SC 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