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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sun Jul 26 2026
VAZ046-270800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
401 PM EDT Sun Jul 26 2026
Date 07/26/26 Mon 07/27/26 Tue 07/28/26 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 65 87 68 87 66
TEMP 83 77 69 67 66 68 80 86 86 79 73 71 70 71 78 84 86 80 73 69 67 70
DEWPT 69 70 69 67 66 68 71 70 69 71 70 69 69 70 74 75 74 72 69 68 67 68
MIN/MAX RH 100 57 100 68 99
RH 63 79100100100100 74 59 57 77 90 93 97 97 88 74 68 77 87 97100 93
WIND DIR SW S S SE N NW N E S SE S S SW SW SW SW SW W W NW NW NW
WIND SPD 3 3 2 2 1 2 2 3 3 3 3 3 5 6 10 12 11 8 5 4 5 5
WIND GUST 23 21 18
CLOUDS SC B1 B1 SC B1 B1 SC B1 B1 SC SC SC B1 B2 B2 B2 B2 B1 B1 FW FW FW
CLOUDS(%) 37 67 66 40 55 63 40 52 57 32 40 35 55 71 71 87 87 52 52 13 21 11
VSBY 10 10 9 5 3 6 10 10 10 10 10 7 7 6 6 6 6 7
POP 12HR 50 20 30 80 30
RAIN SHWRS SC SC IS IS IS NM NM O O SC SC
TSTMS SC SC IS SC SC SC
Obvis PF PF PF
MIX HGT 5 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 5 2 <1
T WIND DIR SW E NW N E NE NE NE N NE SE S SW SW SW SW NE E
T WIND SPD 5 9 2 1 2 3 2 2 4 2 1 4 2 6 13 18 8 1
DISPERSION VP VP VP VP VP VP VP PR PR PR VP PR
ADI 36 4 1 1 1 4 8 14 27 1 1 2 2 7 43 74 16 1
MAX LVORI 1 4 10 10 10 9 3 2 2 4 7 8 8 8 4 3 3 4
STABILITY A F F G F B A B A G G G E B C C D D
CEILING 3900 500 None None None None 10400 5700 None
STA PRES 29.15 29.14 29.15 29.11 29.11 29.07 29.01 28.91
Date 07/29Thu 07/30/26Fri 07/31/26Sat 08/01/26Sun 08/02/26
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 87 64 84 65 85 66 84 67 82
TEMP 86 80 68 68 83 77 67 68 83 78 68 69 82 77 69 69 80 75
DEWPT 68 67 64 65 66 67 64 65 66 67 66 68 70 70 69 69 73 72
RH 55 65 87 90 57 71 90 90 57 69 93 97 67 79100100 79 90
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC FW SC SC SC SC B1 B2 B2 B1 B1 B1 B2
POP 12HR 5 5 5 5 5 10 40 50 60
RAIN SHWRS IS SC SC SC SC NM
TSTMS IS IS IS
$$
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