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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Tue May 5 2026
NCZ006-060800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
401 PM EDT Tue May 5 2026
Date 05/05/26 Wed 05/06/26 Thu 05/07/26 Fri
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 59 81 60 70 46
TEMP 82 76 67 64 61 62 69 77 80 75 68 66 63 61 63 64 66 61 56 51 47 49
DEWPT 48 49 53 54 54 56 60 60 61 63 63 65 63 61 63 61 58 56 53 49 44 44
MIN/MAX RH 84 50 100 77 92
RH 31 39 61 70 78 81 73 56 52 66 84 97100100100 90 75 84 90 93 89 83
WIND DIR S S S S S SW SW SW SW SW SW W SW SW W N N N N N N N
WIND SPD 11 6 9 9 9 9 10 12 11 5 3 2 3 4 5 5 6 3 3 2 2 2
WIND GUST 24 17 19 20 20 20 23 25 21
CLOUDS SC SC SC SC B1 OV OV OV OV B2 B2 OV OV OV OV OV OV B2 B1 B1 SC SC
CLOUDS(%) 49 36 35 45 69 93 89 93 88 77 80 95 95 95 95 91 88 79 69 60 47 39
VSBY 10 10 10 10 10 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 50 90 90 40
RAIN SHWRS IS SC IS SC SC NM O O O O O O SC SC IS IS
TSTMS IS SC SC IS IS IS SC IS
MIX HGT 8 <1 <1 <1 <1 2 3 4 4 <1 <1 <1 <1 1 2 2 2 1
T WIND DIR S S S S S S S SW SW SW SW E NE E N NE N N
T WIND SPD 26 10 13 21 14 18 20 28 25 9 4 1 3 12 16 9 11 13
DISPERSION PR PR PR PR PR VP VP VP VP VP VP VP
ADI 134 5 9 20 13 36 63 82 68 6 2 1 2 15 37 22 31 6
MAX LVORI 1 2 3 3 4 3 3 1 1 3 5 10 10 5 4 4 3 4
STABILITY C F E D D C C D D E F F F C C C C F
CEILING None 6000 4300 1200 2600 400 300 3000 11300
STA PRES 29.31 29.28 29.27 29.24 29.26 29.21 29.15 29.15
Date 05/08Sat 05/09/26Sun 05/10/26Mon 05/11/26Tue 05/12/26
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 70 49 77 52 82 58 79 49 74
TEMP 67 63 53 53 72 71 57 57 80 75 64 62 76 70 55 50 71 67
DEWPT 42 47 46 51 55 56 54 55 57 59 59 60 58 53 47 45 44 46
RH 40 56 77 93 55 59 90 93 45 58 84 93 54 55 74 83 38 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC B1 SC FW FW FW SC B1 B1 B1 B2 B1 SC FW FW
POP 12HR 10 20 20 5 20 40 60 20 5
RAIN SHWRS IS IS IS SC SC SC NM IS IS
TSTMS IS IS IS 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