National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 PM EDT Wed May 28 2025

NCZ001-290800-
RAWS 310141
36.40N  81.29W Elev. 3009 ft
802 PM EDT Wed May 28 2025

Date           05/28/25      Thu 05/29/25            Fri 05/30/25            Sat
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          56          68          50
TEMP                61 59 57 60 67 72 72 67 62 58 56 59 67 66 65 58 54 52 50 53
DEWPT               59 58 56 58 60 59 58 58 57 57 56 57 59 60 56 52 48 47 48 49
MIN/MAX RH                   99          61          98          74          90
RH                  93 96 96 93 78 64 61 73 84 96100 93 75 81 73 80 80 83 93 86
WIND DIR             S  S  S SW  W  W  W  W NW  W  W SW SW  W  W NW NW NW NW  W
WIND SPD             3  3  2  3  5  6  5  4  3  3  2  3  5 10 11 11 12 12 13 14
WIND GUST                                                        21 24 24 25 27
CLOUDS              B2 B2 OV B2 B2 B1 B1 B1 SC B1 B2 B1 B2 B2 B1 SC SC SC SC SC
CLOUDS(%)           79 84 88 81 79 65 67 66 44 55 75 61 72 72 56 46 46 46 43 40
VSBY                 7  7  7  7  7  7  7  7  7  7  7  3  3  3  3  7            
POP 12HR                     20          30          30          90          30
RAIN SHWRS                IS IS IS SC SC    IS SC SC  O  O  O  O SC SC IS IS SC
TSTMS                                       IS IS IS IS IS IS IS IS            
MIX HGT             <1 <1 <1 <1  3  4  3 <1 <1 <1 <1 <1  3  2  3  2            
T WIND DIR          SW SW SW SW  W  W  W  W  W NW NW  W SW  S SW SW            
T WIND SPD           3  3  2  1  3 12 14 11  6  3  5  5 11 16 18 13            
DISPERSION          VP VP VP             VP VP VP VP             FR FR FR FR   
ADI                  2  2  1  1 10 45 49  5  3  2  3  6 33 39 40 15            
MAX LVORI            7  8 10  7  4  1  1  3  6  8  9  6  3  3  3  4            
STABILITY            F  F  F  B  C  C  C  F  G  F  F  B  C  C  D  D            
CEILING               400   400   400  2700  None  1300  4600  None  None      
STA PRES            27.28 27.28 27.28 27.22 27.20 27.15 27.08 26.94            


Date           05/31Sun 06/01/25Mon 06/02/25Tue 06/03/25Wed 06/04/25
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       66      48      69      50      73      53      76      55      77
TEMP          65 62 50 52 68 64 52 55 71 68 55 58 74 70 58 60 76 70
DEWPT         49 47 46 47 47 51 48 50 50 54 51 54 54 56 53 56 55 59
RH            56 58 86 83 47 63 86 83 47 61 86 86 50 61 83 87 48 68
WIND SPD          15>     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC FW FW SC SC SC SC FW FW FW FW FW FW FW FW SC SC SC
POP 12HR           30      10      30      10      10       5       5       5      10
RAIN SHWRS    SC SC       IS SC                                    

$$


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