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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Sun May 31 2026
VAZ024-010800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
431 PM EDT Sun May 31 2026
Date 05/31/26 Mon 06/01/26 Tue 06/02/26 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 56 81 54 75 49
TEMP 77 70 65 62 58 60 74 79 79 71 64 60 56 57 67 73 74 69 59 53 50 54
DEWPT 54 56 55 55 55 55 54 52 52 54 50 49 50 51 52 51 52 54 52 49 48 50
MIN/MAX RH 92 37 83 45 95
RH 45 61 70 78 90 84 50 39 39 55 60 67 80 80 59 46 46 59 78 86 93 86
WIND DIR S S W N N N N N N NE NE NE NE NE NE NE NE NE N N N N
WIND SPD 4 2 2 0 0 1 3 3 3 2 1 1 1 2 2 3 2 1 0 0 0 1
CLOUDS B1 SC SC B1 SC B1 SC B1 B1 B1 SC SC B2 B1 FW SC SC FW SC FW FW CL
CLOUDS(%) 51 49 50 57 39 57 35 62 56 67 41 50 79 60 25 40 40 20 32 8 9 3
VSBY 10 10 10 10 9 10 10 10 10 10 8 10 10 10 10 10 10 10 8 8 8 10
POP 12HR 0 0 5 20 0
RAIN SHWRS IS IS
TSTMS IS IS
MIX HGT 5 <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 1 3 5 5 <1
T WIND DIR SW S S SW W N N N E E NE E NE NE NE NE NE NE
T WIND SPD 8 12 5 3 1 3 4 6 6 6 5 13 10 14 17 14 12 10
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 34 6 3 2 1 4 22 46 37 3 3 6 5 23 69101 76 5
MAX LVORI 1 3 3 5 7 5 2 1 1 2 3 3 4 3 1 1 1 3
STABILITY C F F F G B A B B F F F F B A A A G
CEILING None None None 5400 None 3000 None None None
STA PRES 28.47 28.45 28.46 28.46 28.52 28.61 28.68 28.68
Date 06/03Thu 06/04/26Fri 06/05/26Sat 06/06/26Sun 06/07/26
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 80 53 86 57 89 61 90 64 90
TEMP 78 71 57 58 83 78 62 62 87 81 66 65 88 83 68 67 88 83
DEWPT 48 54 49 51 52 59 54 56 57 61 57 59 61 64 61 62 64 67
RH 35 55 75 77 34 52 75 81 36 51 73 81 40 53 78 84 45 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW CL CL CL FW CL FW FW SC FW SC SC SC SC SC B1 B1
POP 12HR 0 5 0 0 0 5 10 10 30
RAIN SHWRS IS SC
TSTMS 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