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Overall Green alert Tropical Cyclone for GREG-17
on 17 Jul 2017 15:00 UTC
GDACS Event Report - Summary


Tropical Cyclone GREG-17 can have a low humanitarian impact based on the Maximum sustained wind speed and the affected population and their vulnerability.

Updated: this report is based on advisory number 38: (27 Jul 2017 00:22).

  • Tropical Cyclone Tropical Depression (maximum wind speed of 93 km/h)
  • on 17 Jul 2017 15:00 UTC
  • Population affected by Category 1 (120 km/h) wind speeds or higher is 0
  • inserted at 26 Jul 2017 20:22:19 UTC

Extreme Rain

Potential rainfall is calculated based on rainfall observed by several microwave satellite sensors.

The image shows the total rainfall accumulation associated with the cyclone.

Storm surge

No content available


Known identifiers for this event: EP072017 (NOAAid) EP072017 (JTWCid)

Latest media headlines

Articles: 135 | About casualties: 5 | Last hour: 0

Satellite Shows Tropical Storm Greg Being Affected by Wind Shear

Tue, 25 Jul 2017 20:22:00 +0200sciencenewsline (en)

NOAA's GOES-East satellite provided an infrared look at a disorganized Tropical Storm Greg as it continues to weaken and get battered by wind shear in the Eastern Pacific Ocean. On July 25 at 8 a.m. EDT (1200 UTC) NOAA's GOES-East satellite provided an infrared image of Tropical Storm Greg and showed that wind shear was affecting the storm.

Satellite Shows Tropical Storm Greg Losing Shape

Tue, 25 Jul 2017 04:53:00 +0200enn (en)

Tropical Storm Greg appears to be less-rounded and more elongated on satellite imagery from NOAA's GOES-West satellite. Greg is still over 1,500 miles east of Hawaii. NOAA's GOES-West satellite captured an infrared image of Tropical Storm Greg on July 24 at 8 a.m. EDT (1200 UTC). The image revealed a less-rounded tropical cyclone.

NASA's Terra Satellite Watching Tropical Storm Greg

Thu, 20 Jul 2017 17:22:00 +0200sciencenewsline (en)

NASA Terra satellite provided a clear view of Tropical Storm Greg, located off the southwestern coast of Mexico. Greg is one of three tropical cyclones in the Eastern Pacific Ocean and is the closest to land. On July 18 at 4:30 p.m. EDT (2030 UTC) the Moderate Resolution Imaging Spectroradiometer or....

More news...

Data, images, links, services and documents

For this events, GDACS has links to information from the following sources: EMM (1), JRC (163), BOM (1), JTWC (1), (1), NASA (1), NOAA (3), OCHA (1), TRMM (1), Unisys (1), ECMWF (4), HWRF (1), GFS (1), INFORM (1),

Access resources: List or RSS RSS

Further information and official advisories can be found at the Severe Weather Information Centre of the World Meteorological Organization, by clicking on the Tropical Cyclone symbols on the world map of the site.