National Weather Service United States Department of Commerce

Above Average Temperatures in the West; Winter Weather Returns to the Upper Midwest and Great Lakes

Well above average temperatures will continue across the West this week, potentially breaking some daily high temperature records. A storm system dropping south out of Canada will bring a wintry mix to the Upper Midwest and Great Lakes Tuesday, pushing into the Central Appalachians and interior Northeast on Wednesday. Read More >

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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
201 AM EST Tue Jan 13 2026

VAZ046-140900-
RAWS 441101
37.39N  78.80W Elev. 804 ft
201 AM EST Tue Jan 13 2026

Date           01/12/26      Tue 01/13/26            Wed 01/14/26            Thu
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EST 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07

MIN/MAX TEMP                 30          54          36          54          26
TEMP                      32 31 42 52 53 46 44 41 39 37 46 54 53 47 44 39 32 27
DEWPT                     21 21 25 26 27 27 27 27 28 29 33 34 35 36 36 28 20 13
MIN/MAX RH                   68          34          73          47          74
RH                        63 66 50 36 36 47 51 57 64 72 60 46 50 65 73 64 61 55
WIND DIR                   W SW SW SW SW SW SW SW SW SW SW SW SW  W  W  W NW NW
WIND SPD                   5  5  6 10 10  9 10  8  6  6  6  8  6  5  8  9 10 10
WIND GUST                             20 21 21 19 17                   20 21 21
CLOUDS                    CL SC FW FW FW FW FW FW SC SC B1 B1 B2 B2 B2 B1 SC SC
CLOUDS(%)                  5 34  6 14  9 22 14 20 27 31 67 67 85 86 76 63 47 27
VSBY                      10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                      0           0           5          20          20
RAIN                                                        S  S  S  S         
MIX HGT                   <1 <1 <1  2  2 <1 <1 <1 <1 <1 <1  3  3 <1 <1  2  2  2
T WIND DIR                SW SW SW SW SW SW SW SW SW SW SW SW  W  W NW NW NW NW
T WIND SPD                 3  4 10 14 20 11 10  9  9  8 11 17 17 20 24 25 20 23
DISPERSION                PR             PR FR PR PR             PR PR PR FR   
ADI                        2  4 10 37 50  8  7  6  4  6 14 38 39 14 22 34 28 62
MAX LVORI                  3  3  2  1  1  2  2  3  3  3  2  1  1  3  3  3  2  1
STABILITY                  F  C  C  C  C  E  E  E  F  C  D  D  D  E  D  D  D  C
CEILING                          None  None  None  None  9800  8700  4900  None
STA PRES                        29.42 29.23 29.14 29.06 28.98 28.92 28.99 29.09


Date           01/15Fri 01/16/26Sat 01/17/26Sun 01/18/26Mon 01/19/26
UTC 6hrly     18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly     13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19

MAX/MIN TEMP       35      17      38      26      44      23      37      19      36
TEMP          33 26 22 19 35 34 30 27 42 38 30 24 35 30 24 20 34 31
DEWPT          6  4  4  6  6 11 15 18 24 23 18 15 14 14 10  9  7 11
RH            31 38 45 56 29 38 53 68 48 54 60 68 41 51 54 62 32 43
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW CL FW FW SC FW SC B1 SC SC SC SC SC FW FW FW FW
POP 12HR            5       0       5       5      20       5      20       5       5
RAIN                                   S                           
SNOW                                   S           S  S            

$$


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