Difference between revisions of "Liverpool England MSHPC cyclone summary"

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  UNNAMED STORM OF THE MONTH... BUT STILL BROUGHT SIGNIFICANT RAINFALL TO AREAS
 
  UNNAMED STORM OF THE MONTH... BUT STILL BROUGHT SIGNIFICANT RAINFALL TO AREAS
 
  OF KOMPA RU.
 
  OF KOMPA RU.
 +
 +
THE FIRST AND LONGEST-LASTING STORM OF THE MONTH... IMPRESSIVE CATEGORY FIVE
 +
HURRICANE GRIEL (4510)... FORMED ON JUNE 10 FROM A DISTURBANCE WELL TO THE WEST OF
 +
TORQUAY THAT HAD BEEN CONTINUALLY GENERATING DEEP CONVECTION FOR ABOUT A DAY. AN AFLE
 +
RECONNAISANCE AIRCRAFT FLEW INTO THE SYSTEM ON JUNE 10 AND A SPECIAL ADVISORY WAS
 +
ISSUED AT 10/2200 HPT WHEN THE AIRCRAFT REPORTED FLIGHT-LEVEL WINDS OF 40 KT. COUPLED
 +
WITH SPARSE SHIP REPORTS OF 35 KNOTS, BASED ON DVORAK SATELLITE ANALYSIS AT THE TIME
 +
THE SYSTEM WAS INITIATED AS A 30-KT DEPRESSION. THE SYSTEM WAS UPGRADED TO A TROPICAL
 +
STORM FIVE HOURS LATER BUT INSTEAD OF BEING NAMED NITSCHKE - THE NEXT NAME ON THE LIST
 +
- A DECISION WAS TAKEN TO NAME IT GRIEL, AS IT WAS DECIDED THAT STORM 4511 HAD REACHED
 +
TROPICAL STORM STRENGTH EARLIER THAN 4510 AND HENCE WOULD TAKE THE NEXT AVAILABLE NAME.
 +
AN INTERESTING POINT TO NOTE ABOUT THIS STORM WAS THAT WHILE TROPICAL... IT WAS ALWAYS
 +
WITHIN A HALF DEGREE LATITUDE OF 14.0 SOUTH. GRIEL CONTINUED TO MOVE WEST AND
 +
STRENGTHENED INTO A HURRICANE AT 11/2100 HPT - BARELY 24 HOURS AFTER FORMING. CONSENSUS
 +
DATA-T OF 4.0 FROM HDCW AND UHWF WAS THE BASIS FOR UPGRADING GRIEL TO A 65-KT HURRICANE.
 +
ITS WESTWARD PATH CONTINUED AND AS IT MOVED OVER WARM WATERS GRIEL CONTINUED ITS
 +
INTENSIFICATION, BECOMING A CATEGORY TWO HURRICANEE JUST SIX HOURS LATER. THIS ADVISORY
 +
... THE 6TH... WAS ALSO THE FIRST WHILE GRIEL WAS A HURRICANE TO MENTION THE POSSIBILITY
 +
OF A CATEGORY 5 HURRICANE. AT 12/1500 HPT THE DECISION WAS MADE TO UPGRADE GRIEL TO A
 +
CATEGORY THREE HURRICANE WITH 105-KNOT WINDS. A TROPICAL STORM WATCH WAS PUT IN PLACE AT
 +
THIS TIME FOR THE COAST OF VASSFFORCIA. AGAIN... GRIEL'S RAPID STRENGTHENING PHASE BUMPED
 +
IT UP ANOTHER CATEGORY AT THE NEXT ADVISORY. AT THIS TIME IT WAS DECIDED TO PUT A TROPICAL
 +
STORM WARNING IN EFFECT FOR PUERTO NUEVO. FURTHER WARNINGS AND WATCHES WERE SOON NEEDED
 +
FOR THE SOUTHERN VENERATIO-01 AND NORTHERN ANIMUS-01 COASTS. AT 13/1500 HPT A NEW REGIONAL
 +
RECORD FOR MINIMUM CENTRAL PRESSURE WAS ESTIMATED AT 928 HPA... AND AN AFLE RECON AIRCRAFT
 +
WAS SCRAMBLED. A SIGNIFICANT RELOCATION OCCURRED AT 14/0300 HPT WITH THE FINDINGS OF THIS
 +
RECON FLIGHT... WHICH PLACED THE CENTRE OF GRIEL WEST OF THE EXPECTED POSITION. IT WAS
 +
ALSO AT THIS ADVISORY WHERE THE AFLE PLANE REPORTED 140-KT WINDS FROM A DROPSONDE... AS
 +
WELL AS A 907 HPA MINIMUM PRESSURE. THE PRESSURE READING FOR THIS ADVISORY WAS ESTIMATED
 +
AT 903 HPA AS THE READING WAS NOT FROM THE CENTRE. HOWEVER, THE 140-KT INTENSITY WAS
 +
UTILISED... MAKING GRIEL THE FIRST CATEGORY FIVE HURRICANE OR CYCLONE THAT THE MSHPC OR
 +
EX-MSCPC HAD WARNED ON FOR SIX YEARS. THE MINIMUM PRESSURE FOR THIS CYCLONE... ALONG
 +
WITH THE STRONGEST WINDS... WERE REPORTED AT THE NEXT ADVISORY - 145 KT, 899 HPA - MAKING
 +
GRIEL THE STRONGEST CYCLONE EVER ON RECORD IN THE REGION. AT THIS POINT - 14/0900HPT...
 +
GRIEL HAD WOBBLED TO THE WNW... FORCING HURRICANE WARNINGS TO GO INTO EFFECT FOR
 +
PRUBDABLIA. A RAPID WEAKENING THEN ENSUED AS AN EYEWALL REPLACEMENT CYCLE TOOK PLACE AND
 +
GRIEL WOBBLED BACK ONTO ITS ORIGINAL PATH... NOW AS A 135-KT CATEGORY 4 HURRICANE. FURTHER
 +
WEAKENING UNTIL LANDFALL AT 15/1220 HPT AS A CATEGORY ONE HURRICANE. IN ALL GRIEL KILLED
 +
AT LEAST 35... AND CAUSED AS MUCH AS 500 MILLION LIVERPOOL POUNDS IN DAMAGE. THE STORM
 +
BECAME EXTRATROPICAL INLAND LATER THAT DAY AND ADVISORIES WERE STOPPED AT 15/1500 HPT.
 
   
 
   
 
  SUMMARY TABLE
 
  SUMMARY TABLE

Revision as of 09:16, 20 October 2006

The Liverpool England Meterological Service Hurricane Prediction Centre releases monthly summaries of tropical cyclone activity during the active season (February through December) in The Heartland.
/Past summaries 

TCMS TCWC HPCOR
TROPICAL CYCLONE MONTHLY SUMMARY
MAY 2145
LIVERPOOL ENGLAND MET SERVICE HURRICANE PREDICTION CENTRE, OREAN
3 AM HPT JUN 1 2145

NO TROPICAL CYCLONES FORMED IN MAY... EXTRAPOLATED AVERAGE FOR MAY IS 0.5 NAMED
STORMS.

IN APRIL... 
SHORT-LIVED TROPICAL STORM OREN DEVELOPED FROM A CONVECTIVE AREA OF LOW PRESSURE
ABOUT 450 KM EAST-NORTHEAST OF AL-JOHARI, LIVERPOOL ENGLAND LATE APRIL 14. TCWC
LLIWO INITIATED ADVISORIES ON TROPICAL DEPRESSION BETA... AND SHORTLY AFTER THE
MSHPC STARTED ADVISORIES ON TROPICAL DEPRESSION NINE. ALTHOUGH LOW SEA-SURFACE
TEMPERATURES AND ITS PROXIMITY TO LAND... THE GULP MOUNTAIN PENINSULA... SEEMINGLY
MADE INTENSIFICATION UNLIKELY... TD NINE STRENGTHENED INTO A MINIMAL TROPICAL STORM
EARLY APRIL 15 AND WAS NAMED TROPICAL STORM OREN. IT WAS A RELATIVELY FAST-MOVING
SYSTEM AND QUICKLY MADE LANDFALL IN THE GULP MOUNTAIN RANGE... DUMPING UP TO 15
INCHES... 380 MM... OF RAIN IN THE MOUNTAINOUS REGIONS. NO DEATHS OR DAMAGE WERE
REPORTED.

SUMMARY TABLE
STR  NAME         NUMBER    DURATION    MAX WIND    DEATHS     LIVERPOOL ENGLAND
                                           KT                       DAMAGE
--------------------------------------------------------------------------------- 
MONTHLY TOTAL        0

*PRELIMINARY ESTIMATE
DATES ARE BASED ON LOCAL TIME
---------------------------------------------------------------------------------

FORECASTERS CALTS/GUNTHER
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