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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sun Jul 26 2026
NCZ006-270800-
RAWS 310801
36.37N 79.29W Elev. 580 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 66 87 69 89 67
TEMP 82 78 72 70 68 69 80 86 87 83 75 72 71 72 82 87 85 81 75 71 68 70
DEWPT 72 73 72 70 68 69 73 71 71 72 70 69 69 71 75 75 74 73 71 70 68 69
MIN/MAX RH 100 58 99 65 100
RH 72 85100100100100 79 61 59 70 84 90 93 97 79 68 70 77 87 97100 97
WIND DIR SW S SW S N N N N NW N S S SW SW SW SW W SW W W NW NW
WIND SPD 1 1 1 1 0 0 3 2 1 0 1 1 2 3 6 9 9 5 2 2 3 4
WIND GUST 18 21 19
CLOUDS B1 B1 B1 SC SC SC SC B1 SC SC SC SC SC B1 B1 B2 B2 B1 B1 FW FW FW
CLOUDS(%) 53 55 64 43 43 49 42 58 41 40 33 28 41 57 59 84 84 55 55 11 15 18
VSBY 10 10 9 6 5 9 10 10 10 10 10 10 10 7 7 6 6 6
POP 12HR 50 5 10 80 30
RAIN SHWRS IS SC IS SC SC O O SC SC
TSTMS IS SC SC NM SC IS
Obvis PF PF PF PF
MIX HGT 5 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 2 4 2 <1
T WIND DIR W SW SW SW SW NW N N N NE E SE S SW W SW SW S
T WIND SPD 5 11 5 3 2 4 5 5 8 3 2 2 2 3 14 18 33 8
DISPERSION VP VP VP VP VP VP VP VP PR VP VP VP
ADI 32 5 3 2 1 4 20 31 55 2 1 1 1 4 42 71 90 5
MAX LVORI 3 5 9 10 10 9 3 1 1 3 6 7 7 8 3 1 3 4
STABILITY B F F G F A A B A G G G F B B C C E
CEILING None None None None None None 11500 10600 None
STA PRES 29.20 29.19 29.21 29.18 29.17 29.14 29.11 29.00
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 65 85 64 85 67 85 68 83
TEMP 85 82 69 68 83 79 68 68 84 79 70 70 83 79 71 69 81 78
DEWPT 69 69 65 66 68 69 65 67 69 70 67 69 71 72 70 69 74 73
RH 59 65 87 93 61 72 90 97 61 74 90 97 67 79 97100 79 85
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL CL FW SC FW FW SC SC SC B2 B2 B2 B1 B1 B2
POP 12HR 0 0 0 5 10 10 40 50 60
RAIN SHWRS IS SC SC SC SC NM
TSTMS SC SC 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