Overall Green Tropical Cyclone for LALA-26 in United States from 12 Aug 2026 15:00 UTC to 28 Aug 2026 09:00 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve awareness, information exchange and coordination in the first phase after major sudden-onset disasters.

Overall Green Tropical Cyclone for LALA-26

in United States

Meteorological source:

GDACS NOAA

Impact Single TC

GFS
HWRF
ECMWF

Impact based on all weather systems in the area

Impact

Tropical Cyclone LALA-26 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	76 km/h
Maximum storm surge	0.3 m (17 Aug 21:15 UTC)
Vulnerability	Low (United States)

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	76 km/h	0.3 m	89 mm	0.5
ECMWF Overall	166 km/h	0.4 m	675 mm	0.5
Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

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Wind

166 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 17 Aug 2026 00:00 UTC

See TC classification SSHS

Wind Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

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
1	12 Aug 2026 00:00	58	-	-	-	-	-	-	-
2	12 Aug 2026 12:00	-	1 thousand		-		-			United States
3	13 Aug 2026 00:00	68	-	-	-	-	-	-	-
4	13 Aug 2026 12:00	68	-	-	-	-	-	-	-
5	14 Aug 2026 00:00	76	-	-	-	-	-	-	-
6	14 Aug 2026 12:00	76	-	-	-	-	-	-	-
7	15 Aug 2026 00:00	83	-	-	-	-	-	-	-
8	15 Aug 2026 12:00	94	-		-	-	-	-	-	United States
9	16 Aug 2026 00:00	94	-		-	-	-	-	-	United States, Other countries
10	16 Aug 2026 12:00	83	-		-	-	-	-	-	United States, Other countries
11	17 Aug 2026 00:00	140	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 17 Aug 2026 00:00 UTC

Level	Country	Population
50-100 mm	United States, Kiribati	13,534	+
	United States	7,029
	Kiribati	6,505

Rain Impact Timeline

people affected <=10000

10000< people affected <=100000

people affected >100000

N°	Date (UTC)	Max Rainfall (mm)	Pop >100mm or higher	50-100	100-250	250-500	500-750	750-1000	>1000	Countries
1	12 Aug 2026 00:00	302	-	-	-	-	-	-	-
2	12 Aug 2026 12:00	206	-	-	-	-	-	-	-
3	13 Aug 2026 00:00	408	-	-	-	-	-	-	-
4	13 Aug 2026 12:00	309	-	-	-	-	-	-	-
5	14 Aug 2026 00:00	264	-	-	-	-	-	-	-
6	14 Aug 2026 12:00	153	-	-	-	-	-	-	-
7	15 Aug 2026 00:00	263	-		-	-	-	-	-	United States
8	15 Aug 2026 12:00	328	50 thousand			-	-	-	-	United States
9	16 Aug 2026 00:00	483	130 thousand				-	-	-	United States, Other countries
10	16 Aug 2026 12:00	271	10 thousand			-	-	-	-	United States, Other countries
11	17 Aug 2026 00:00	369	-		-	-	-	-	-	United States, Kiribati

Impact estimation for the next 72h

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StormSurge

0.3 m

The maximum Storm surge height is 0.3m in Umipaa, United States. This height is estimated for 17 Aug 2026 21:15 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 17 Aug 2026 00:00 UTC

Level	Date (UTC)	Name	Country	Storm surge height (m)
	17 Aug 2026 21:15	Umipaa	United States	0.3
	17 Aug 2026 21:15	Kaunakakai	United States	0.3
	17 Aug 2026 21:15	Kaumalapau	United States	0.3
	17 Aug 2026 21:15	Moku	United States	0.3
	17 Aug 2026 21:15	Kamalo	United States	0.3
	17 Aug 2026 21:15	Kaluaaha	United States	0.3
	17 Aug 2026 21:15	Keomuku	United States	0.3
	17 Aug 2026 21:15	Ualapue	United States	0.3
	18 Aug 2026 22:45	Pukoo	United States	0.2
	18 Aug 2026 22:45	Waialua	United States	0.2
	19 Aug 2026 01:15	Kaanapali	United States	0.2
	19 Aug 2026 01:15	Puukolii	United States	0.2
	19 Aug 2026 01:15	Lahaina	United States	0.2
	19 Aug 2026 05:30	Kahakuloa	United States	0.2
	19 Aug 2026 05:30	Maalaea	United States	0.2
	19 Aug 2026 05:30	Waihee	United States	0.2
	19 Aug 2026 05:30	Hyashi Village	United States	0.2
	19 Aug 2026 05:30	Wailuku	United States	0.2
	19 Aug 2026 05:30	Kahului	United States	0.2
	19 Aug 2026 05:30	Kihei	United States	0.2
	19 Aug 2026 05:30	Puunene	United States	0.2
	19 Aug 2026 05:30	Village Eight	United States	0.2
	19 Aug 2026 05:30	Hawaiian Village	United States	0.2
	19 Aug 2026 05:30	Paia	United States	0.2
	19 Aug 2026 05:30	Haiku	United States	0.2
	19 Aug 2026 05:30	Pauwela	United States	0.2
	19 Aug 2026 05:30	Ulumalu	United States	0.2
	18 Aug 2026 02:30	Kaaawa	United States	0.2
	18 Aug 2026 02:30	Honolulu	United States	0.2
	18 Aug 2026 02:30	Kahana	United States	0.2
	18 Aug 2026 02:30	Kahaluu	United States	0.2
	18 Aug 2026 02:30	Ahuimanu	United States	0.2
	18 Aug 2026 02:30	Heeia	United States	0.2
	18 Aug 2026 02:30	Kaneohe	United States	0.2
	18 Aug 2026 02:30	Maunawili	United States	0.2
	18 Aug 2026 02:30	Aina Haina	United States	0.2
	18 Aug 2026 02:30	Kaneohe Station	United States	0.2
	18 Aug 2026 02:30	Kailua	United States	0.2
	18 Aug 2026 02:30	Lanikai	United States	0.2
	18 Aug 2026 02:30	Waimanalo	United States	0.2
	18 Aug 2026 02:30	Maunalua	United States	0.2
	18 Aug 2026 21:30	Crater Village	United States	0.2
	18 Aug 2026 21:30	Honokahua	United States	0.2
	18 Aug 2026 21:30	Mahinahina Camp	United States	0.2
	18 Aug 2026 21:30	Kapalua	United States	0.2
	18 Aug 2026 21:30	Olowalu	United States	0.2
	18 Aug 2026 22:45	Halawa	United States	0.2
	17 Aug 2026 16:45	Kailua	United States	0.2
	17 Aug 2026 16:45	Wailua	United States	0.2
	19 Aug 2026 10:30	Keawakapu	United States	0.2
	19 Aug 2026 10:30	Makena	United States	0.2
	19 Aug 2026 10:30	Keoneoio	United States	0.2
	17 Aug 2026 00:30	Makaha	United States	0.2
	17 Aug 2026 00:30	Makaha Valley	United States	0.2
	17 Aug 2026 00:30	Mokuleia	United States	0.2
	17 Aug 2026 00:30	Dillingham Ranch	United States	0.2
	17 Aug 2026 00:30	Waialua	United States	0.2
	17 Aug 2026 00:30	Haleiwa	United States	0.2
	17 Aug 2026 00:30	Kamooloa	United States	0.2
	17 Aug 2026 00:30	Kawailoa Camp	United States	0.2
	17 Aug 2026 00:30	Kawailoa Beach	United States	0.2
	17 Aug 2026 00:30	Waimea	United States	0.2
	17 Aug 2026 00:30	Sunset Beach	United States	0.2
	17 Aug 2026 00:30	Pupukea	United States	0.2
	17 Aug 2026 00:30	Waialee	United States	0.2
	17 Aug 2026 00:30	Kawela Bay	United States	0.2
	17 Aug 2026 00:30	Marconi	United States	0.2
	17 Aug 2026 00:30	Kahuku	United States	0.2
	19 Aug 2026 01:15	Kualapuu	United States	0.2
	17 Aug 2026 16:30	Moomomi	United States	0.2
	17 Aug 2026 16:30	Hoolehua	United States	0.2
	17 Aug 2026 16:30	Kalaupapa	United States	0.2
	18 Aug 2026 04:45	Halena	United States	0.2
	18 Aug 2026 04:45	Wahilauhue	United States	0.2
	18 Aug 2026 04:45	Kepuhi	United States	0.2
	18 Aug 2026 04:45	Mauna Loa	United States	0.2
	19 Aug 2026 22:00	Laie	United States	0.2
	19 Aug 2026 22:00	Hauula	United States	0.2
	19 Aug 2026 22:00	Punaluu	United States	0.2
	17 Aug 2026 08:45	Nahiku	United States	0.2
	18 Aug 2026 00:45	Aiea	United States	0.2
	18 Aug 2026 00:45	Halawa	United States	0.2
	18 Aug 2026 00:45	Halawa Heights	United States	0.2
	18 Aug 2026 00:45	Aliamanu	United States	0.2
	18 Aug 2026 00:45	Waikane	United States	0.2
	18 Aug 2026 00:45	Fort Shafter	United States	0.2
	17 Aug 2026 03:45	Waipio	United States	0.2
	17 Aug 2026 03:45	Kukuihaele	United States	0.2
	17 Aug 2026 03:45	Honokaa	United States	0.2
	17 Aug 2026 11:30	Napari	Kiribati	0.2
	17 Aug 2026 11:30	Weston Point	Kiribati	0.2
	18 Aug 2026 21:15	Kaupo	United States	0.2
	18 Aug 2026 21:15	Kipahulu	United States	0.2
	18 Aug 2026 21:15	Kaeleku	United States	0.2
	18 Aug 2026 21:15	Muolea	United States	0.2
	18 Aug 2026 21:15	Haou	United States	0.2
	18 Aug 2026 21:15	Puuiki	United States	0.2
	18 Aug 2026 21:15	Hana	United States	0.2
	17 Aug 2026 21:15	Ulupalakua	United States	0.2
	18 Aug 2026 05:30	Mahukona	United States	0.1
	18 Aug 2026 05:30	Hawi	United States	0.1
	18 Aug 2026 05:30	Kapaau	United States	0.1
	18 Aug 2026 05:30	Halaula	United States	0.1
	18 Aug 2026 05:30	Makapala	United States	0.1
	18 Aug 2026 05:30	Niulii	United States	0.1
	19 Aug 2026 05:45	Weloka	United States	0.1
	19 Aug 2026 05:45	Ninole	United States	0.1
	19 Aug 2026 05:45	Hakalau	United States	0.1
	19 Aug 2026 05:45	Honomu	United States	0.1
	19 Aug 2026 05:45	Pepeekeo	United States	0.1
	19 Aug 2026 05:45	Wainaku	United States	0.1
	19 Aug 2026 05:45	Papaikou	United States	0.1
	19 Aug 2026 05:45	Paukaa	United States	0.1
	19 Aug 2026 05:45	Hilo	United States	0.1
	18 Aug 2026 03:15	Mahaiula	United States	0.1
	18 Aug 2026 03:15	Kaupulehu	United States	0.1
	18 Aug 2026 03:15	Kiholo	United States	0.1
	18 Aug 2026 03:15	Weliweli	United States	0.1
	18 Aug 2026 03:15	Anaehoomalu	United States	0.1
	18 Aug 2026 03:15	Puako	United States	0.1
	18 Aug 2026 03:15	Waikoloa Village	United States	0.1
	18 Aug 2026 03:15	Kawaihae	United States	0.1
	17 Aug 2026 08:15	Puuwai	United States	0.1
	19 Aug 2026 07:00	Paauilo	United States	0.1
	19 Aug 2026 07:00	Kukaiau	United States	0.1
	19 Aug 2026 07:00	Ookala	United States	0.1
	19 Aug 2026 07:00	Laupahoehoe	United States	0.1
	19 Aug 2026 07:00	Papaaloa	United States	0.1
	17 Aug 2026 13:15	Kahaino	United States	0.1
	17 Aug 2026 13:15	Nonopapa	United States	0.1
	17 Aug 2026 13:15	Kiekie	United States	0.1
	18 Aug 2026 01:30	Waipio	United States	0.1
	18 Aug 2026 01:30	Pearl City	United States	0.1
	18 Aug 2026 01:30	Waimalu	United States	0.1

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While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
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