Overall Green alert Tropical Cyclone for HERNAN-20
in Mexico,
26 Aug 2020 00 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone HERNAN-20 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source ECMWF
Exposed countries
Exposed population No people in Category 1 or higher
Maximum wind speed 90 km/h
Maximum storm surge 0.2 m (25 Aug 19:30 UTC)
Vulnerability Medium (Mexico)

GDACS Score

GDACS alert score for Tropical Cyclones is 0.5 (GREEN Alert), 1.5 (ORANGE Alert), 2.5 (RED Alert)
For more info on GDACS alert score click here.
  Wind Storm surge Rainfall GDACS score
ECMWF Current 90 km/h 0.2 m 680 mm 0.5
ECMWF Overall 90 km/h 0.2 m 680 mm 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

90 km/h

No people by wind speeds of Tropical Storm strength or above



Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 26 Aug 2020 00:00 UTC (Overall situation)

See TC classification SSHS


Wind Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Winds (km/h) Pop in Cat. 1 or higher TS Cat. 1 Cat. 2 Cat. 3 Cat. 4 Cat. 5 Countries
GREEN 1 25 Aug 2020 12:00 68 - - - - - - -
GREEN 2 26 Aug 2020 00:00 90 - - - - - - -
Download:





Impact estimation for the next 72h
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Rainfall





Rain exposed population - AoIs

Estimations based on the bulletin of 26 Aug 2020 00:00 UTC (Overall situation)
LevelCountryPopulation 
250-500 mmMexico470,639 
100-250 mmMexico2,961,345 
50-100 mmMexico3,325,090 

Rain Impact Timeline

people affected <=10000
10000< people affected <=100000
people affected >100000


Alert N° Date (UTC) Max Rainfall (mm) Pop >100mm or higher 50-100 100-250 250-500 500-750 750-1000 >1000 Countries
Blue 1 25 Aug 2020 12:00 544 -
- - - - - Mexico
Blue 2 26 Aug 2020 00:00 464 2.9 million
- - - Mexico




Impact estimation for the next 72h
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StormSurge

0.2 m

The maximum Storm surge height is  0.2m in La Boca, Mexico. This height is estimated for 25 Aug 2020 19:30 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. The calculations are published about 20 minutes after a new advisory is detected by GDACS. The calculations identify the populated places affected by storm surge up to three days in advance, using the forecasted track. When forecasts change, the associated storm surge changes too and alert levels may go up or down. All links, data, statistics and maps refer to the latest available calculation. If the calculation for the last advisory is not completed, the latest available calculation is shown.

Storm Surge Exposed population - AoIs


Storm Surge Exposed locations

Calculation based on the bulletin of 26 Aug 2020 00:00 UTC (Overall situation)
    
Alert Date (UTC) Name Country Storm surge height (m)
25 Aug 2020 19:30 La Boca Mexico  0.2
26 Aug 2020 23:45 San Blas Mexico  0.2
26 Aug 2020 23:45 Santa Cruz Mexico  0.2
26 Aug 2020 00:45 Perihuete Mexico  0.1
26 Aug 2020 00:45 Dimas Mexico  0.1
26 Aug 2020 05:00 Novillero Mexico  0.1
26 Aug 2020 05:00 Cuantla Mexico  0.1
26 Aug 2020 01:45 Cuamecate Mexico  0.1
28 Aug 2020 07:45 Santa Cruz Mexico  0.1
28 Aug 2020 07:45 El Nuevo Mexico  0.1
26 Aug 2020 23:45 La Lima Mexico  0.1
26 Aug 2020 20:45 San Francisco Mexico  0.1
26 Aug 2020 20:45 Monteon Mexico  0.1
26 Aug 2020 03:45 Marmol Mexico  0.1
26 Aug 2020 03:45 Florida Mexico  0.1
26 Aug 2020 03:45 Mazatlan Mexico  0.1
27 Aug 2020 00:00 Toro Mocho Mexico  0.1
28 Aug 2020 01:45 La Fortuna Mexico  0.1
28 Aug 2020 01:45 El Cardoncito Mexico  0.1
27 Aug 2020 14:00 Cuitzmala Mexico  0.1
28 Aug 2020 02:00 La Palmita Mexico  0.1
28 Aug 2020 02:00 Caimanero Mexico  0.1
28 Aug 2020 02:00 Jarilla Mexico  0.1
27 Aug 2020 14:00 Chamela Mexico  0.1
28 Aug 2020 02:45 Isla de Palmito del Verde Mexico  0.1