TSUNAMI BULLETIN NUMBER 002
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0014Z 02 APR 2014
THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC
OCEAN AND ADJACENT SEAS...EXCEPT ALASKA...BRITISH COLUMBIA...
WASHINGTON...OREGON AND CALIFORNIA.
... A TSUNAMI WARNING AND WATCH ARE IN EFFECT ...
A TSUNAMI WARNING IS IN EFFECT FOR
CHILE / PERU / ECUADOR
A TSUNAMI WATCH IS IN EFFECT FOR
COLOMBIA / PANAMA / COSTA RICA / NICARAGUA
FOR ALL OTHER AREAS COVERED BY THIS BULLETIN... IT IS FOR
INFORMATION ONLY AT THIS TIME.
THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND
ANY ACTIONS TO BE TAKEN IN RESPONSE.
AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME - 2347Z 01 APR 2014
COORDINATES - 19.8 SOUTH 70.8 WEST
DEPTH - 10 KM
LOCATION - NEAR THE COAST OF NORTHERN CHILE
MAGNITUDE - 8.0
MEASUREMENTS OR REPORTS OF TSUNAMI WAVE ACTIVITY
GAUGE LOCATION LAT LON TIME AMPL PER
------------------- ----- ------ ----- --------------- -----
PISAGUA CL 19.6S 70.2W 2352Z 1.92M / 6.3FT 44MIN
IQUIQUE CL 20.2S 70.1W 2351Z 1.70M / 5.6FT 56MIN
LAT - LATITUDE (N-NORTH, S-SOUTH)
LON - LONGITUDE (E-EAST, W-WEST)
TIME - TIME OF THE MEASUREMENT (Z IS UTC IS GREENWICH TIME)
AMPL - TSUNAMI AMPLITUDE MEASURED RELATIVE TO NORMAL SEA LEVEL.
IT IS ...NOT... CREST-TO-TROUGH WAVE HEIGHT.
VALUES ARE GIVEN IN BOTH METERS(M) AND FEET(FT).
PER - PERIOD OF TIME IN MINUTES(MIN) FROM ONE WAVE TO THE NEXT.
EVALUATION
SEA LEVEL READINGS INDICATE A TSUNAMI WAS GENERATED. IT MAY HAVE
BEEN DESTRUCTIVE ALONG COASTS NEAR THE EARTHQUAKE EPICENTER AND
COULD ALSO BE A THREAT TO MORE DISTANT COASTS. AUTHORITIES SHOULD
TAKE APPROPRIATE ACTION IN RESPONSE TO THIS POSSIBILITY. THIS
CENTER WILL CONTINUE TO MONITOR SEA LEVEL DATA TO DETERMINE THE
EXTENT AND SEVERITY OF THE THREAT.
FOR ALL AREAS - WHEN NO MAJOR WAVES ARE OBSERVED FOR TWO HOURS
AFTER THE ESTIMATED TIME OF ARRIVAL OR DAMAGING WAVES HAVE NOT
OCCURRED FOR AT LEAST TWO HOURS THEN LOCAL AUTHORITIES CAN ASSUME
THE THREAT IS PASSED. DANGER TO BOATS AND COASTAL STRUCTURES CAN
CONTINUE FOR SEVERAL HOURS DUE TO RAPID CURRENTS. AS LOCAL
CONDITIONS CAN CAUSE A WIDE VARIATION IN TSUNAMI WAVE ACTION THE
ALL CLEAR DETERMINATION MUST BE MADE BY LOCAL AUTHORITIES.
ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS
WITHIN THE WARNING AND WATCH AREAS ARE GIVEN BELOW. ACTUAL
ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY NOT BE THE
LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN
SUCCESSIVE WAVES CAN BE FIVE MINUTES TO ONE HOUR.
mardi 1 avril 2014
http://ptwc.weather.gov/ptwc/text.php?id=pacific.TSUPAC.2014.04.02.0014
Apr 1, 2014 0600 UTC Day 1 Convective Outlook
DAY 1 CONVECTIVE OUTLOOK NWS STORM PREDICTION CENTER NORMAN OK 1232 AM CDT TUE APR 01 2014 VALID 011200Z - 021200Z ...THERE IS A SLGT RISK OF SVR TSTMS FROM ERN KS INTO WRN MO... ...THERE IS A SLGT RISK OF SVR TSTMS ACROSS NWRN TX... ...SYNOPSIS... HEIGHTS WILL RISE ACROSS THE ERN STATES THROUGH THE PERIOD AS A NEGATIVELY-TILTED SHORTWAVE TROUGH EJECTS NEWD ACROSS THE GREAT LAKES AND INTO CANADA. MEANWHILE...A LARGER AND LOWER-AMPLITUDE UPPER TROUGH WILL MOVE SLOWLY EWD ACROSS THE GREAT BASIN WITH JET MAX NOSING INTO THE FOUR CORNERS AREA. AT THE SURFACE...A COLD FRONT WILL CONTINUE EWD ACROSS THE GREAT LAKES ATTENDANT TO THE UPPER TROUGH...WITH THE TRAILING FRONT RETURNING NWD AS A WARM FRONT ACROSS AR...OK AND NWRN TX DURING THE DAY. SLY LOW-LEVEL WINDS BEHIND THIS BOUNDARY WILL ALLOW DEWPOINTS IN THE 60S F TO SPREAD NWD...WITH 62-64 F DEWPOINTS INTO NRN OK BY WED MORNING. STRONG HEATING WILL OCCUR IN THE DRIER AIR ACROSS WRN AND NWRN TX...WHICH WILL HELP TO DESTABILIZE THE AIR MASS WITH A FEW STRONG TO SEVERE STORMS POSSIBLE. OVERNIGHT...SIGNIFICANT WARM ADVECTION AND ISENTROPIC LIFT WILL OCCUR WITH A 50-KT SWLY LOW-LEVEL JET WITH LIFT FOCUSED OVER ERN KS AND MO...WITH SCATTERED STORMS...SOME POSSIBLY SEVERE. ...NWRN TX INTO SWRN OK... STRONG HEATING WILL OCCUR W OF THE DRYLINE...WITH DEWPOINTS IN THE 60S F RETURNING NWWD AS SELY LOW-LEVEL FLOW BROADLY INCREASES ACROSS THE SRN PLAINS. WEAK HEIGHT RISES WILL OCCUR DURING THE DAY AS THE GREAT LAKES TROUGH DEPARTS...AND THIS WILL RESULT IN ONLY WEAK CONVERGENCE AND FORCING FOR ASCENT ACROSS NWRN TX. THEREFORE...WHILE MODERATE INSTABILITY LEVELS ARE EXPECTED...WITH FAVORABLE SHEAR PROFILES FOR SUPERCELLS...THE SEVERE THREAT WILL BE MORE CONDITIONAL. THE MOST LIKELY SCENARIO MAY BE FOR A LINE OF TCU TO FORM ON THE LEADING EDGE OF THE MOISTURE RETURN/RETREATING DRYLINE...WITH ISOLATED THUNDERSTORMS ERUPTING AS THIS AIR MIXES INTO THE STEEP LOW-LEVEL LAPSE RATE ENVIRONMENT. THE MAIN ISSUE TO A MORE SIGNIFICANT SEVERE THREAT WILL BE THE LACK OF PROLONGED FORCING AND LIKELY MIXING OF THE MOISTURE. ALTHOUGH THE LOW-LEVEL JET INCREASES FURTHER DURING THE EVENING...CAPPING WILL EXIST...THUS STORMS SHOULD DISSIPATE AFTER SUNSET. ...ERN KS INTO WRN MO... WARM ADVECTION ON THE NOSE OF A DEVELOPING LOW-LEVEL JET WILL RESULT IN SCATTERED SHOWERS AND STORMS BY AFTERNOON FROM ERN KS INTO CNTRL MO...BUT THIS INITIAL ROUND WILL BE NON-SEVERE WITH WEAK INSTABILITY. LATER IN THE EVENING AND OVERNIGHT...STRONGER LIFT AND A MORE SUBSTANTIAL NWD SURGE OF MOISTURE WILL OCCUR...WITH STORMS DEVELOPING OVER ERN KS AND MOVING INTO WRN MO. THERMODYNAMIC PROFILES AS WELL AS EFFECTIVE SHEAR WILL FAVOR SEVERE HAIL. THE MOST LIKELY CORRIDOR APPEARS TO BE FROM MANHATTAN KS TO COLUMBIA MO.
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