Lake effect snøklokke - Lake effect snow watch
A Lake Effect Snow Watch var en bulletin utstedt av National Weather Service i USA for å advare om kraftige snøfallsmengder som vil være mulig fra konvektiv snø generert av kalde luftmasser som passerer over frosne innsjøer ( snø med innvirkning på innsjøen ). Kriteriene for beløp kan variere i forhold til forskjellige fylkesvarslingsområder .
2. oktober 2017 ble utstedelsen av Lake Effect Snow Watch avviklet, og det utstedes nå en Winter Storm Watch når ovennevnte kriterier forventes oppfylt.
Eksempel
MNZ020-037-181845- /O.NEW.KDLH.LE.A.0004.081219T0600Z-081220T0600Z/ SOUTHERN LAKE/LAKESHORE-CARLTON/SOUTHERN ST. LOUIS- 443 AM CST THU DEC 18 2008 ...LAKE EFFECT SNOW WATCH IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY EVENING... THE NATIONAL WEATHER SERVICE IN DULUTH HAS ISSUED A LAKE EFFECT SNOW WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH FRIDAY EVENING.) LAKE EFFECT SNOW WILL DEVELOP AROUND MIDNIGHT TONIGHT...AND LAST THROUGH MUCH OF FRIDAY AND INTO FRIDAY EVENING. THE HEAVIEST OF THE SNOW WILL FALL ALONG THE HIGHER TERRAIN FROM DULUTH TO SILVER BAY...WHERE THE POTENTIAL EXISTS FOR UP TO 8 INCHES IN ISOLATED AREAS. THE HEAVIEST OF THE SNOW LOOKS TO FALL EARLY FRIDAY MORNING AROUND THE TIME OF THE MORNING COMMUTE. A LAKE EFFECT SNOW WATCH MEANS THE POTENTIAL EXISTS FOR HEAVY ACCUMULATION OF LAKE-EFFECT SNOW. TRAVEL AND COMMERCE MAY BE SIGNIFICANTLY AFFECTED. YOU ARE ENCOURAGED TO STAY CURRENT WITH THE LATEST WEATHER INFORMATION REGARDING THIS DEVELOPING WINTER STORM VIA LOCAL TELEVISION...RADIO...THE INTERNET...OR NOAA WEATHER RADIO. $$ LONKA