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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Sat May 23 2026
NCZ001-240800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
301 PM EDT Sat May 23 2026
Date 05/23/26 Sun 05/24/26 Mon 05/25/26 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 55 68 59 70 60
TEMP 56 56 55 56 56 56 61 62 66 63 61 61 62 63 65 68 66 63 61 63 64 64
DEWPT 55 56 55 55 55 55 60 62 63 60 60 58 58 59 61 64 63 61 61 60 59 60
MIN/MAX RH 100 85 99 85 99
RH 96100100 96 96 96 97100 90 90 97 90 87 87 87 87 90 93100 90 84 87
WIND DIR S S S S S SW S S S S S S W W SW S S SW S SE S S
WIND SPD 6 10 9 8 5 5 4 5 4 5 5 5 5 4 3 2 1 3 4 5 4 5
CLOUDS OV OV B2 B2 B2 B2 SC B1 B2 B1 B2 B2 B2 B2 B2 OV OV B2 B2 B2 B2 B2
CLOUDS(%) 89 88 84 87 87 76 41 69 87 67 76 77 71 78 78 96 96 80 83 87 85 82
VSBY 4 2 1 0 0 2 7 10 9 9 3 0 0 4 10 10 10 6
POP 12HR 60 80 50 90 70
RAIN SHWRS SC SC NM SC IS SC O SC IS IS IS NM NM O O NM NM NM NM NM
TSTMS SC IS SC SC IS IS SC SC SC
MIX HGT <1 <1 <1 <1 <1 <1 2 2 2 <1 <1 <1 <1 <1 2 2 2 <1
T WIND DIR S SE SE SE S S SW SW S S S S W NW NW NW SW S
T WIND SPD 4 4 3 3 2 2 6 5 9 12 6 8 8 10 6 6 2 4
DISPERSION FR PR PR PR PR PR PR PR VP VP PR VP
ADI 5 4 3 3 2 2 17 15 23 8 5 5 5 8 18 16 5 2
MAX LVORI 9 9 6 6 7 7 5 4 4 5 7 6 5 5 4 4 6 6
STABILITY C D D D E C A C C E E E E C B B B F
CEILING 600 600 1600 600 600 600 600 600 600
STA PRES 26.83 26.84 26.85 26.82 26.81 26.81 26.85 26.83
Date 05/26Wed 05/27/26Thu 05/28/26Fri 05/29/26Sat 05/30/26
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 71 61 76 60 77 59 72 54 66
TEMP 69 64 63 64 69 66 63 63 70 67 63 62 66 63 58 55 59 57
DEWPT 65 62 60 60 63 60 58 59 62 60 57 57 59 56 53 50 52 50
RH 87 93 90 87 81 81 84 87 76 78 81 84 78 78 83 83 78 77
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 OV B2 B1 B2 OV B1 B1 B1 B2 B1 B1 B2 B2 B1 B2 B1 B1
POP 12HR 100 60 80 30 70 30 70 60 50
RAIN SHWRS NM O NM IS NM O SC SC NM SC SC NM NM SC NM SC SC
TSTMS SC NM SC IS SC SC IS SC IS 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