This is an automated message produced by the OCHA Centre for Humanitarian Data.
Dear colleagues,
NHC has issued their cyclone forecasts for Jul. 2, 2pm (NY time). There is 1 active storm: Beryl.
This email consolidates exposure estimates from OCHA CHD. Estimates from ADAM and GDACS were not accessed for this email. Full admin-1 figures are in the attached spreadsheet; example alerts with the full charts and the methodology are online.
Best regards,
OCHA Centre for Humanitarian Data
Summary
| Storm | Country | Similar storms | Wind | Exposure [% pop.] | Return period |
|---|
| Beryl 2024 | Jamaica | Dean 2007 Ivan 2004 Gustav 2008 | 34 kt | 2.8M (100%) | 4-year |
| 50 kt | 2.8M (100%) | 12-year |
| 64 kt | 2.1M (76%) | 24-year |
| Cayman Islands (UK) | Grace 2021 Charley 2004 Dean 2007 | 34 kt | 66K (100%) | 3-year |
| 50 kt | 65K (98%) | 6-year |
| Mexico | Zeta 2020 Narda 2019 Larry 2003 | 34 kt | 4.2M (3%) | 1-year |
| 50 kt | 2.0M (2%) | 4-year |
| Haiti | Olga 2007 Fred 2021 Noel 2007 | 34 kt | 6.2M (53%) | 2-year |
| Dominican Republic | Emily 2011 Alpha 2005 Mindy 2003 | 34 kt | 324K (3%) | 1-year |
| Cuba | Claudette 2003 Nate 2017 Marco 2020 | 34 kt | 20 (0%) | <1-year |
Methodology & documentation | Sign up for alerts | Example alerts
Countries already passed (see past emails for final exposure estimate): Beryl 2024: Barbados (Jul. 1, 8am), Grenada (Jul. 1, 2pm), Saint Lucia (Jul. 1, 2pm), Saint Vincent and the Grenadines (Jul. 1, 2pm), Trinidad and Tobago (Jul. 1, 2pm)
Beryl 2024 Atlantic basin
Forecast landfall
Mexico near Quintana Roo · Jul. 5, 4am ET (in ~2.6 days) · ~72 kt (Category 1)
United States of America near Texas · Jul. 8, 6am ET (in ~5.7 days) · ~46 kt (tropical storm)

Reading the charts below: everything sits on one axis, population exposed. Dots are the current estimates by source (labelled beneath the axis) · vertical ticks are past storms since 2002, the most similar ones in bold · the shaded curve, where shown, is the exposure distribution of every storm to affect the country since 2002 — the same storms at every wind speed, so at 50 and 64 kt it concentrates near zero (most storms never bring those winds there) and a storm out in the tail is genuinely rare · the scale never runs past the country's total population · a dashed line marks exposure already observed.
Jamaica 24-year RP

Cayman Islands (UK) 6-year RP

Mexico 4-year RP

Haiti 2-year RP

Dominican Republic 1-year RP

Cuba <1-year RP