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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 PM EDT Sat May 23 2026
NCZ003-240800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
631 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 56 73 59 80 60
TEMP 57 57 57 57 58 66 70 72 71 66 64 62 63 74 78 76 73 68 64 62 65
DEWPT 57 57 57 57 58 62 66 68 67 65 64 62 63 70 71 72 71 67 64 62 65
MIN/MAX RH 100 85 100 79 100
RH 100100100100100 87 87 87 87 97100100100 87 79 87 93 97100100100
WIND DIR E E SE E SE E SE SE SE N N N N N S S N N N N N
WIND SPD 2 2 1 1 1 1 2 2 1 0 0 0 0 0 2 1 0 0 0 0 0
CLOUDS OV OV OV OV OV OV OV B2 B1 B2 B2 B1 B1 B1 OV OV OV OV B2 OV B2
CLOUDS(%) 100 98 95 95 95 92 92 80 68 73 75 63 57 65 90 90 89 91 87 89 83
VSBY 5 4 2 3 3 4 7 10 10 6 2 2 4 10 10 10 7
POP 12HR 60 40 40 80 80
RAIN SHWRS NM NM SC SC IS IS SC SC SC SC SC SC SC SC O O O O NM NM NM
TSTMS SC SC IS IS SC SC SC IS
Obvis PF PF PF PF
MIX HGT <1 <1 <1 <1 <1 1 2 3 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR E E NE NE NE S SW S S S SW SW NW NW NW SW SW
T WIND SPD 5 3 2 1 1 3 8 11 11 10 8 6 8 6 5 5 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 3 2 1 1 1 6 23 37 5 5 4 3 9 15 20 12 4
MAX LVORI 8 7 8 9 8 6 4 3 5 9 9 9 8 4 3 4 6
STABILITY F F F F B B B B F F F F B B B B F
CEILING 700 700 700 1900 2200 600 1600 3000 3800
STA PRES 28.28 28.28 28.28 28.23 28.22 28.22 28.26 28.24
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 80 61 81 60 83 59 77 54 72
TEMP 77 73 65 66 79 76 65 66 80 76 65 64 74 72 61 58 68 68
DEWPT 72 72 65 66 71 71 63 64 69 70 62 62 66 64 57 55 58 58
RH 85 97100100 77 85 93 93 69 82 90 93 76 76 87 90 70 70
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 70 90 30 70 30 60 50 50
RAIN SHWRS NM O NM IS NM O SC SC NM SC IS NM NM SC SC SC SC
TSTMS IS NM SC IS SC SC 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