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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun May 31 2026
VAZ046-312000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 AM EDT Sun May 31 2026
Date Sun 05/31/26 Mon 06/01/26 Tue 06/02/26
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 58 80 54 74
TEMP 68 75 78 71 64 60 59 63 72 78 78 70 63 59 56 57 66 71 72 68
DEWPT 47 50 51 54 54 54 55 57 56 54 51 52 51 52 52 53 52 51 50 50
MAX/MIN RH 38 88 39 90 45
RH 47 41 39 55 70 81 87 81 57 43 39 53 65 78 86 86 61 49 46 52
WIND DIR S S SW S S SW SW W NW NE NE NE NE NE NE NE NE NE NE NE
WIND SPD 2 1 3 3 4 5 4 3 5 8 6 4 5 4 6 9 9 9 8 4
CLOUDS CL FW B1 SC SC B1 B1 SC B1 SC SC B1 B1 B2 B1 B1 SC SC SC FW
CLOUDS(%) 5 8 54 49 49 59 58 36 53 35 40 65 57 71 65 61 40 39 37 24
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 5 10
MIX HGT 4 5 5 <1 <1 <1 <1 1 4 6 6 <1 <1 <1 <1 2 4 6 5 <1
T WIND DIR N W SW SW SW SW SW W N N NE NE NE E E NE E NE NE NE
T WIND SPD 1 4 9 14 5 10 4 6 9 9 9 8 11 16 13 14 17 18 17 17
DISPERSION VP VP PR VP VP PR VP PR VP
ADI 6 29 62 7 4 7 3 9 47 62 63 5 8 11 9 31 91130103 8
MAX LVORI 2 2 1 3 3 4 6 4 1 1 1 2 3 4 5 4 1 1 1 2
STABILITY A A A F E E E A A B B E E E E C B B B F
CEILING None None None None None None 7900 6500 None None
STA PRES 29.42 29.32 29.28 29.24 29.25 29.25 29.32 29.38 29.48 29.50
Date Wed 06/03/26Thu 06/04/26Fri 06/05/26Sat 06/06/26
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 50 76 53 82 58 88 64 90
TEMP 54 56 73 70 56 59 80 75 62 63 86 80 67 68 88 84
DEWPT 48 49 47 50 47 50 51 56 52 55 56 59 56 58 59 61
RH 80 77 40 49 72 72 36 52 70 75 36 49 68 70 38 46
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW CL FW FW CL FW FW FW FW SC SC
POP 12HR 5 5 10 5 5 0 5 10
$$
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