1956 Storm #11, Greta: 1. Please remove the reference to the eastern Pacific monsoon trough in the metadata summary. Agreed. 2. Has the Meteorological Services of Cuba and the Bahamas been contacted for any information they have on this system? The Meteorological Services of Cuba and the Bahamas have no additional information regarding the tropical depression stage of Greta. 3. The Committee concurs with a later genesis time. However, there are conflicting signals of when that should be. Could 0000 or 0600 UTC 31 October be a more appropriate time give the apparent circulation near the eastern end of Cuba at that time? Or could it be later, since the rawinsonde launch from the ship suggests the system was still cold core near that “Crawford” time? Agreed to begin genesis at 00Z on the 31st given the circulation apparent near the eastern end of Cuba. 4. Please re-examine the existing and proposed central pressure of 992 mb at 0000 UTC 2 November. The NHRP catalog shows two flight into Greta around 2100 UTC that day, with a mission around 2100 UTC 1 November. It needs to be determined which of these “synoptic” missions observed the 992 mb pressure. Despite a thorough search at archives at NHC, HRD, NOAA library, and the tropical storm email list, no additional observations have become available from NHRP research missions. Given that there was a pre-existing 992 mb central pressure in HURDAT at 00Z on the 2nd, it would stand to reason that it was the synoptic mission late on the 1st which measured this pressure. 5. The 1500 UTC 3 November microfilm map has three ships with pressures of 989-990 mb. The 1800 UTC map has two ships of 987-988 mb. Please mention these at some appropriate point in the metadata. All of these (and dozens more) had already been hand digitized and included into the excel database. One ship at each time has now been added into the daily summary. 6. Please re-examine some of the intensities on 3-4 November. The 1200 UTC 3 November intensity is based on a reconnaissance pressure of 982 mb, and 60 kt was chosen as the intensity due to the large size and low environmental pressures. At 0000 UTC 4 November a ships with 986 mb and 40 kt (also suggesting a 982 mb pressure) was used as the basis for a 65 kt intensity estimate. Why the inconsistency?
1956 Storm #11, Greta: 1. Please remove the reference to the eastern Pacific monsoon trough in the metadata summary. Agreed. 2. Has the Meteorological Services of Cuba and the Bahamas been contacted for any information they have on this system? The Meteorological Services of Cuba and the Bahamas have no additional information regarding the tropical depression stage of Greta. 3. The Committee concurs with a later genesis time. However, there are conflicting signals of when that should be. Could 0000 or 0600 UTC 31 October be a more appropriate time give the apparent circulation near the eastern end of Cuba at that time? Or could it be later, since the rawinsonde launch from the ship “Crawford” suggests the system was still cold core near that time? Agreed to begin genesis at 00Z on the 31st given the circulation apparent near the eastern end of Cuba. 4. Please re-examine the existing and proposed central pressure of 992 mb at 0000 UTC 2 November. The NHRP catalog shows two flight into Greta around 2100 UTC that day, with a “synoptic” mission around 2100 UTC 1 November. It needs to be determined which of these missions observed the 992 mb pressure. Despite a thorough search at archives at NHC, HRD, NOAA library, and the tropical storm email list, no additional observations have become available from NHRP research missions. Given that there was a pre-existing 992 mb central pressure in HURDAT at 00Z on the 2nd, it would stand to reason that it was the synoptic mission late on the 1st which measured this pressure. 5. The 1500 UTC 3 November microfilm map has three ships with pressures of 989-990 mb. The 1800 UTC map has two ships of 987-988 mb. Please mention these at some appropriate point in the metadata. All of these (and dozens more) had already been hand digitized and included into the excel database. One ship at each time has now been added into the daily summary. 6. Please re-examine some of the intensities on 3-4 November. The 1200 UTC 3 November intensity is based on a reconnaissance pressure of 982 mb, and 60 kt was chosen as the intensity due to the large size and low environmental pressures. At 0000 UTC 4 November a ships with 986 mb and 40 kt (also suggesting a 982 mb pressure) was used as the basis for a 65 kt intensity estimate. Why the inconsistency?
1956reanalysis-replies.docx