
A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >
Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Sun Aug 2 2026
VAZ018-022000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 PM EDT Sun Aug 2 2026
Date Sun 08/02/26 Mon 08/03/26 Tue 08/04/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 78 68 83 66 80
TEMP 77 78 73 70 69 68 69 78 82 80 72 69 68 67 67 74 79 78 71
DEWPT 71 70 70 68 68 67 69 69 68 68 70 67 66 65 66 69 70 70 69
MAX/MIN RH 88 100 69 99 73
RH 82 76 90 93 97 97100 74 63 67 93 93 93 93 97 84 74 76 93
WIND DIR S S S SW W W NW NW NW NW N N NE NE NE E E E SE
WIND SPD 5 5 3 2 1 1 2 2 3 3 2 2 2 2 3 3 4 4 2
WIND GUST 17 17 13
CLOUDS B2 B2 B2 OV B2 B2 B2 B1 SC B1 SC B1 B2 B2 OV B2 B2 B1 B2
CLOUDS(%) 82 76 85 89 85 83 74 68 45 57 44 65 76 87 89 79 73 65 75
VSBY 8 9 9 5 2 2 0 10 10 10 10 10 7 6 7 7 6 6 7
POP 12HR 80 70 50 50 50
RAIN SHWRS NM NM NM NM SC SC SC SC SC SC SC SC SC
TSTMS NM NM SC SC SC SC SC SC
MIX HGT 2 3 <1 <1 <1 <1 <1 3 4 3 <1 <1 <1 <1 <1 2 3 3 1
T WIND DIR S S S S S SW NW NW NW NW NW N NE NE NE NE E E E
T WIND SPD 17 19 12 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
ADI 48 59 6 4 3 3 6 32 35 31 5 3 3 6 12 22 27 25 4
MAX LVORI 4 4 7 8 8 8 8 3 3 3 6 6 6 7 5 4 3 3 6
STABILITY C C F F F F B B A B F F F F B B C C F
CEILING 1300 1300 500 1100 None 2200 2000 2300 2300
STA PRES 27.58 27.59 27.60 27.65 27.66 27.74 27.78 27.84 27.81
Date Wed 08/05/26Thu 08/06/26Fri 08/07/26Sat 08/08/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 67 81 68 84 68 85 68 85
TEMP 68 68 80 72 69 69 83 73 69 70 84 73 69 70 84 73
DEWPT 66 67 72 71 68 68 72 72 68 68 72 71 67 68 72 71
RH 93 97 77 97 97 97 70 97 97 93 67 93 93 93 67 93
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 B2 B1 B1 B1 B2 SC SC SC B2 B1 SC SC B2
POP 12HR 30 70 10 70 20 60 20 60
RAIN SHWRS SC IS IS NM IS NM IS NM IS IS NM
TSTMS 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