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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Thu May 7 2026
VAZ046-072000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 AM EDT Thu May 7 2026
Date Thu 05/07/26 Fri 05/08/26 Sat 05/09/26
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 62 43 70 49 76
TEMP 54 56 60 58 52 49 44 47 62 68 70 64 56 53 50 53 66 74 76 70
DEWPT 52 50 50 49 46 41 38 40 39 41 42 44 43 44 44 46 52 52 52 53
MAX/MIN RH 68 81 36 81 43
RH 93 80 69 72 80 74 79 76 43 37 36 48 62 71 80 77 61 46 43 55
WIND DIR NE NE SE S W NW W W SW SW SW S S S S S SW SW W W
WIND SPD 9 5 3 2 4 4 3 2 4 8 9 6 6 6 6 9 11 12 11 4
WIND GUST 17 17 17 19 21 23
CLOUDS OV B2 B1 SC CL FW FW FW CL CL CL FW FW FW SC B1 B1 SC SC SC
CLOUDS(%) 92 87 57 29 5 11 12 13 3 3 2 6 13 18 40 51 62 33 32 26
VSBY 7 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 70 0 0 0 10
RAIN SHWRS SC IS
MIX HGT 2 2 2 <1 <1 <1 <1 <1 4 7 7 <1 <1 <1 <1 1 3 6 7 <1
T WIND DIR NE NE NE SW W W W SW SW SW SW S S S S S S SW W W
T WIND SPD 16 13 3 6 4 3 2 1 8 13 13 6 6 6 5 14 19 20 19 8
DISPERSION VP VP VP VP PR PR PR PR VP
ADI 40 36 10 3 2 2 1 1 45106104 3 3 3 3 25 46 92 92 4
MAX LVORI 4 3 3 3 5 4 5 4 1 1 1 2 3 3 5 3 1 1 1 3
STABILITY C C B G F F G A A B B F F F F C D C C F
CEILING 700 None None None None None None None None None
STA PRES 29.19 29.16 29.22 29.29 29.31 29.23 29.22 29.15 29.12 29.08
Date Sun 05/10/26Mon 05/11/26Tue 05/12/26Wed 05/13/26
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 53 81 54 69 44 70 49 74
TEMP 57 57 80 74 62 56 65 62 48 48 67 64 53 53 71 69
DEWPT 52 53 54 56 56 52 47 42 39 38 38 41 42 45 51 52
RH 83 86 41 53 81 86 52 48 71 68 34 43 66 74 49 55
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 B2 B2 B1 SC SC CL FW SC SC B1 B1
POP 12HR 0 20 70 50 5 0 10 30
RAIN SHWRS IS SC NM SC SC SC
TSTMS SC 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