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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sun May 31 2026
NCZ003-010800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
231 AM EDT Sun May 31 2026
Date 05/30/26 Sun 05/31/26 Mon 06/01/26 Tue
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 54 74 59 81 57
TEMP 55 56 65 71 73 70 64 62 60 62 72 78 78 71 65 60 58 59
DEWPT 47 48 50 53 55 57 58 58 58 60 62 59 57 57 54 52 52 53
MIN/MAX RH 75 53 94 47 83
RH 74 74 58 53 53 63 81 87 93 93 71 52 48 61 68 75 80 80
WIND DIR NE NE SE S S S SW SW SW SW W NW N NE NE NE NE NE
WIND SPD 6 5 3 4 5 5 6 6 5 4 3 4 4 6 6 6 8 10
CLOUDS SC SC B1 B2 B1 SC B1 B2 FW FW SC SC B2 B1 B1 B1 B1 B1
CLOUDS(%) 31 49 61 83 58 44 65 74 23 16 29 45 77 69 58 57 68 56
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 30 20
RAIN SHWRS IS IS IS IS IS IS IS
TSTMS IS IS
MIX HGT <1 1 3 4 4 <1 <1 <1 <1 1 3 5 5 <1
T WIND DIR E E SE S SW SW SW SW SW SW W N NW N
T WIND SPD 12 12 5 5 9 11 11 9 5 2 3 8 9 5
DISPERSION PR PR PR PR PR PR PR PR PR
ADI 8 24 25 32 51 8 5 6 4 3 10 33 54 4
MAX LVORI 3 3 2 1 1 3 4 4 6 6 3 1 1 3
STABILITY E C A A A E F E E C C C B E
CEILING None 4400 None 2300 None None 6900 7800
STA PRES 29.05 29.08 29.00 28.97 28.91 28.88 28.85
Date 06/02Wed 06/03/26Thu 06/04/26Fri 06/05/26Sat 06/06/26
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 72 51 75 53 81 57 85 61 87
TEMP 69 67 54 55 72 69 56 58 78 75 61 61 82 78 64 64 85 80
DEWPT 52 51 49 48 46 49 47 49 51 54 53 54 55 57 57 58 58 59
RH 55 56 83 77 39 49 72 72 39 48 75 78 40 48 78 81 40 49
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC FW FW FW FW CL CL CL FW CL FW FW SC FW SC SC
POP 12HR 30 10 10 5 5 0 5 5 10
RAIN SHWRS IS SC
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