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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Thu May 28 2026
NCZ005-290800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
431 PM EDT Thu May 28 2026
Date 05/28/26 Fri 05/29/26 Sat 05/30/26 Sun
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 82 61 81 54
TEMP 85 77 66 62 57 59 70 79 81 76 67 65 63 65 76 80 79 73 64 59 54 56
DEWPT 60 59 55 54 52 53 54 55 55 58 58 59 59 59 55 51 52 53 50 49 48 49
MIN/MAX RH 84 41 89 36 81
RH 43 54 68 75 83 80 57 44 41 54 73 81 87 81 48 36 39 49 60 69 80 77
WIND DIR N N N NE NE NE E W SW SW SW SW W NW NE NE NE E NE E NE E
WIND SPD 8 4 4 3 3 3 3 2 4 2 3 3 3 3 5 6 6 5 9 5 5 5
CLOUDS FW FW FW FW FW FW FW FW SC SC B1 B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 SC
CLOUDS(%) 19 17 20 17 19 8 15 19 38 44 62 75 85 82 60 58 60 58 64 63 60 43
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 5 5
MIX HGT 7 <1 <1 <1 <1 1 3 5 5 <1 <1 <1 <1 <1 3 5 6 <1
T WIND DIR N N N NE NE E NE W SW SW SW SW NW N NE NE NE E
T WIND SPD 12 9 8 8 5 12 2 3 8 11 3 3 2 9 11 9 10 18
DISPERSION VP VP VP VP VP VP VP VP PR PR PR PR
ADI 91 4 4 4 3 21 10 20 48 5 2 2 1 11 49 55 70 12
MAX LVORI 1 2 3 4 5 3 2 2 1 2 3 5 6 4 1 1 1 2
STABILITY B F F G G A A A A F F F F A A B B E
CEILING None None None None 4700 4400 22500 14500 4900
STA PRES 29.28 29.34 29.35 29.20 29.15 29.12 29.15 29.14
Date 05/31Mon 06/01/26Tue 06/02/26Wed 06/03/26Thu 06/04/26
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 76 56 80 56 79 54 78 53 80
TEMP 73 70 60 61 77 75 61 61 77 73 59 59 76 72 58 58 78 75
DEWPT 49 52 53 56 57 57 54 54 51 52 50 51 48 50 49 50 50 51
RH 43 53 78 84 50 54 78 78 40 48 72 75 37 46 72 75 37 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC B1 SC SC FW FW FW FW FW FW FW FW FW FW FW
POP 12HR 0 10 30 10 10 5 5 5 10
RAIN SHWRS SC 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