
Showers and thunderstorms pose a risk for a couple of tornadoes, occasional damaging gusts, and some scattered flash flooding along the central Gulf Coast. A Pacific storm system continues to bring gusty winds, lower elevation rain, and hazardous mountain snow to the northwestern U.S.. Read More >
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(updated daily around 2am)
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Example monthly F6...
PRELIMINARY LOCAL CLIMATOLOGICAL DATA (WS FORM: F-6)
STATION: TULSA OKLAHOMA
MONTH: MAY
YEAR: 2004
LATITUDE: 36 12 N
LONGITUDE: 95 54 W
TEMPERATURE IN F: :PCPN: SNOW: WIND :SUNSHINE: SKY :PK WND
================================================================================
1 2 3 4 5 6A 6B 7 8 9 10 11 12 13 14 15 16 17 18
AVG MX 2MIN
DY MAX MIN AVG DEP HDD CDD WTR SNW DPTH SPD SPD DIR MIN PSBL S-S WX SPD DR
================================================================================
1 62 48 55 -10 10 0 0.09 0.0 0 11.6 18 20 M M 8 1 29 20
2 72 42 57 -8 8 0 0.00 0.0 0 8.1 24 350 M M 2 30 350
3 67 39 53 -13 12 0 0.00 0.0 0 6.9 14 180 M M 2 M M
Here is a brief listing of what each of the columns holds:
Column 1 - Day of the Month
Column 2 - Maximum Temperature for the day (Midnight to Midnight CST)
Column 3 - Minimum Temperature for the day (Midnight to Midnight CST)
Column 4 - Average Temperature (MAX+MIN/2)
Column 5 - Daily Departure from Normal Temperature
Column 6A - Heating Degree Days (COLUMN 4 - 65 degrees) (zero if col 4 > 64)
Column 6B - Cooling Degree Days (65 degrees - COLUMN 4) (zero if col 4 < 66)
Column 7 - Precipitation (rain or melted snow/sleet/ice) in hundreths of inches
Column 8 - Daily Snowfall (in tenths of inches).
Column 9 - Depth of the Snow on the ground (everything).
Column 10- Average Wind Speed for the Day
Column 11 - Maximum 2-min-average wind speed during the Day
Column 12 - Average Wind Direction for the Day (360 degree compass)
Column 13 - Minutes of Sunshine (n/a)
Column 14 - Percent of possible sunshine (n/a)
Column 15 - Sky cover Average Sunrise to Sunset (in tenths of sky covered by clouds)
Column 16 - Any Weather (Numeric Codes found on the form)
Column 17 - Peak Wind Speed
Column 18 - Direction that peak wind came from (360 degree compass)
M - Missing data