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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sun May 31 2026
NCZ005-010800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
801 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 62 83 57 75 52
TEMP 67 65 64 66 76 81 81 75 66 63 59 59 67 72 74 70 60 55 52 57
DEWPT 56 58 59 62 62 56 53 52 50 51 52 53 51 48 47 48 48 48 47 49
MIN/MAX RH 88 39 81 38 84
RH 68 78 84 87 62 42 38 45 56 65 78 80 56 42 38 45 64 77 83 75
WIND DIR SW SW SW W NW N NE NE NE E NE NE NE NE NE NE NE NE NW NW
WIND SPD 5 6 8 6 5 6 8 5 4 3 5 8 8 9 8 4 2 1 2 3
CLOUDS B1 B2 SC SC SC SC B1 B1 B2 B1 B2 SC SC SC SC FW FW FW FW FW
CLOUDS(%) 67 75 44 38 41 33 54 60 70 52 79 39 38 31 27 18 10 14 18 6
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 20 10 5 5
RAIN SHWRS IS
MIX HGT <1 <1 <1 1 4 6 4 <1 <1 <1 <1 2 5 6 8 <1
T WIND DIR SW SW W SW NW NE NE NE NE E NE NE NE NE NE NE
T WIND SPD 6 13 9 9 6 6 6 6 3 17 18 18 24 21 18 16
DISPERSION PR PR PR PR VP VP PR VP VP VP VP
ADI 5 9 8 16 33 44 27 5 2 8 12 39130153149 7
MAX LVORI 3 3 4 4 1 1 2 2 3 3 4 3 1 1 1 2
STABILITY E E D B A B C E E F E B B B B F
CEILING 3700 None None None 4700 3500 None None None
STA PRES 29.28 29.24 29.22 29.21 29.25 29.32 29.40 29.42
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 79 56 86 60 90 64 92 67 91
TEMP 77 72 58 61 83 80 65 66 88 84 69 69 90 86 73 71 89 85
DEWPT 45 46 46 49 48 50 51 54 52 52 55 58 56 56 59 61 60 60
RH 32 39 64 65 30 35 60 65 29 33 61 68 32 36 62 71 38 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW CL FW CL FW FW FW FW FW SC SC SC SC SC SC SC B1
POP 12HR 5 5 5 0 0 5 10 5 20
RAIN SHWRS IS IS
TSTMS 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