Overall Green alert Tropical Cyclone for NALGAE-22
in China, Philippines
31 Oct 2022 18 UTC
click on to select bulletin time
Impact Single TC
Impact based on all weather systems in the area

Impact

Tropical Cyclone NALGAE-22 can have a low humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source HWRF
Exposed countries China, Hong Kong, Macao
Exposed population No people in Category 1 or higher
Maximum wind speed 126 km/h
Maximum storm surge 1.3 m (01 Nov 04:00 UTC)
Vulnerability Medium (China)

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
HWRF Current 126 km/h 1.3 m 184 mm 0.5
HWRF Overall 126 km/h 1.3 m 778 mm 0.5

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

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Wind



Wind exposed population - AoIs

Estimations based on the bulletin of 31 Oct 2022 18:00 UTC
CategoryCountryPopulation 
Tropical StormChina, Hong Kong, Macao318,605
+
China313,041 
Hong Kong3,948 
Macao1,615 

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 27 Oct 2022 00:00 90 - - - - - - -
GREEN 2 27 Oct 2022 06:00 94 - - - - - - -
GREEN 3 27 Oct 2022 12:00 112 - - - - - - -
GREEN 4 27 Oct 2022 18:00 97 - - - - - - -
GREEN 5 28 Oct 2022 00:00 108 -
- - - - - Philippines
GREEN 6 28 Oct 2022 06:00 97 -
- - - - - Philippines
GREEN 7 28 Oct 2022 12:00 90 -
- - - - - Philippines
GREEN 8 28 Oct 2022 18:00 97 -
- - - - - Philippines
GREEN 9 29 Oct 2022 00:00 101 -
- - - - - Philippines
GREEN 10 29 Oct 2022 06:00 104 -
- - - - - Philippines
GREEN 11 29 Oct 2022 12:00 86 -
- - - - - Philippines
GREEN 12 29 Oct 2022 18:00 79 -
- - - - - Philippines
GREEN 13 30 Oct 2022 00:00 101 -
- - - - - Philippines
GREEN 14 30 Oct 2022 06:00 104 -
- - - - - Philippines
GREEN 15 30 Oct 2022 12:00 97 -
- - - - - Philippines
GREEN 16 30 Oct 2022 18:00 79 -
- - - - - Philippines
GREEN 17 31 Oct 2022 00:00 94 -
- - - - - Philippines
GREEN 18 31 Oct 2022 06:00 104 -
- - - - - Philippines
GREEN 19 31 Oct 2022 12:00 115 - - - - - - -
GREEN 20 31 Oct 2022 18:00 126 -
- - - - - China, Hong Kong, Macao
Download:





Impact estimation for the next 72h
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Rainfall

778 mm

Up to 8.9 million can be affected by rain higher than 100mm (see SSHS)





Rain exposed population - AoIs

Estimations based on the bulletin of 31 Oct 2022 18:00 UTC
LevelCountryPopulation 
250-500 mmChina41,502 
100-250 mmChina, Hong Kong, Macao8,878,550
+
China4,188,970 
Hong Kong4,109,927 
Macao579,652 
50-100 mmChina, Hong Kong12,993,959
+
China11,373,070 
Hong Kong1,620,888 

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 27 Oct 2022 00:00 334 - - - - - - -
Blue 2 27 Oct 2022 06:00 429 - - - - - - -
Blue 3 27 Oct 2022 12:00 510 - - - - - - -
Blue 4 27 Oct 2022 18:00 363 120 thousand
- - - - Philippines
Blue 5 28 Oct 2022 00:00 288 560 thousand
- - - Philippines
Blue 6 28 Oct 2022 06:00 214 80 thousand
- - - - Philippines
Blue 7 28 Oct 2022 12:00 217 300 thousand
- - - - Philippines
Blue 8 28 Oct 2022 18:00 385 150 thousand
- - - - Philippines
Blue 9 29 Oct 2022 00:00 228 530 thousand
- - - - Philippines
Blue 10 29 Oct 2022 06:00 258 560 thousand
- - - - Philippines
Blue 11 29 Oct 2022 12:00 219 430 thousand
- - - - Philippines
Blue 12 29 Oct 2022 18:00 163 4 thousand
- - - - Philippines
Blue 13 30 Oct 2022 00:00 121 -
- - - - - Philippines
Blue 14 30 Oct 2022 06:00 251 - - - - - - -
Blue 15 30 Oct 2022 12:00 169 -
- - - - - Philippines
Blue 16 30 Oct 2022 18:00 139 5 thousand
- - - - Philippines
Blue 17 31 Oct 2022 00:00 127 -
- - - - - Philippines
Blue 18 31 Oct 2022 06:00 162 - - - - - - -
Blue 19 31 Oct 2022 12:00 126 - - - - - - -
Blue 20 31 Oct 2022 18:00 391 8.9 million
- - - China, Hong Kong, Macao




Impact estimation for the next 72h
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StormSurge

The calculations have been performed using NAMIDANCE computer code, from Middle East Technical University.
reference: Zaytsev, Andrey; Kurkin, Andrey; Pelinovsky, Efim; Yalciner, Ahmet C. - NUMERICAL TSUNAMI MODEL NAMI-DANCE. - Science of Tsunami Hazards . Nov2019, Vol. 38 Issue 4, p151-168. 18p.
Doaj

1.3 m

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 31 Oct 2022 18:00 UTC