Filter
Top Products
2-67
KMD 250 Pilot's Guide
Section 2
FIS Operation
Rev 4 Apr/2006
8. Sky Condition: OVC010CB
OVC indicates the sky is overcast. Cloud cover is based on the sky
being divided into eighths or octas. Overcast means the sky is 8
octas covered. The cloud cover designators are as follows:
SKC Sky Clear
CLR Clear below 12,000 ft. (automated observing systems)
FEW 1-2 Octas
SCT 3-4 Octas
BKN 5-7 Octas
OVC 8 octas
“VV” may also be encountered here indicating an indefinite ceiling.
For example, VV004 would indicate a vertical visibility of 400 feet.
010 indicates clouds are at 1000 feet.
CB denotes cloud type is cumulonimbus. “TCU” is another possible
designator meaning towering cumulus. CI is cirrus.
9. Temperature/Dew Point: 18/16
18 indicated the temperature is 18° Celsius. An “M” preceding the
temperature means the temperature is below 0° Celsius.
16 indicated the dew point is 16° Celsius. An “M” preceding the dew
point means the dew point is below 0° Celsius.
10. Altimeter Setting: A2992
A indicates the setting is in inches of mercury.
2992 is the altimeter setting. The first two digits are inches and the
second two are hundredths.
11. Remarks: RMK SLP013 T01760158 PK WND 22030/15
RMK designates the beginning of the remarks. Remarks can con-
tain anything, but often include the following:
SLP indicates sea level pressure in millibars from selected stations.
013 indicates pressure is 1001.3 millibars.
T01760158. Selected stations may also include a 9 place code indi-
cating temperature and dewpoint to the nearest 1/10 degree. T
denotes temperature. 0 indicates temperature is above 0° Celsius.
A “1” in this position indicates a temperature below 0° Celsius. 176
indicates a temperature of 17.6° Celsius. The next 0 indicates the
dew point is above 0° Celsius. A “1” in this position indicates a dew
point below 0° Celsius. 158 indicates a dewpoint of 15.8° Celsius.
PK WND 22030/15. Selected stations may include peak wind
observations which will appear in the remarks element.
Understanding Weather Reports
KMD 250 FIS_R4 8/13/07 10:07 AM Page 2-67