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	115 km/h
Maximum storm surge	0.3 m (18 Aug 22:45 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	115 km/h	0.3 m	237 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 18 Aug 2026 12:00 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	76	-	-	-	-	-	-	-
12	17 Aug 2026 12:00	76	-	-	-	-	-	-	-
13	18 Aug 2026 00:00	97	-	-	-	-	-	-	-
14	18 Aug 2026 12:00	158	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 18 Aug 2026 12:00 UTC

Level	Country	Population
50-100 mm	United States	03

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	89	-	-	-	-	-	-	-
12	17 Aug 2026 12:00	169	-	-	-	-	-	-	-
13	18 Aug 2026 00:00	190	-	-	-	-	-	-	-
14	18 Aug 2026 12:00	348	-		-	-	-	-	-	United States

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 18 Aug 2026 22:45 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 18 Aug 2026 12:00 UTC

Level	Date (UTC)	Name	Country	Storm surge height (m)
	18 Aug 2026 22:45	Umipaa	United States	0.3
	18 Aug 2026 22:45	Kaunakakai	United States	0.3
	18 Aug 2026 22:45	Kaumalapau	United States	0.3
	18 Aug 2026 22:45	Moku	United States	0.3
	18 Aug 2026 22:45	Kamalo	United States	0.3
	18 Aug 2026 22:45	Kaluaaha	United States	0.3
	18 Aug 2026 22:45	Keomuku	United States	0.3
	18 Aug 2026 22:45	Ualapue	United States	0.3
	18 Aug 2026 22:45	Pukoo	United States	0.3
	18 Aug 2026 22:45	Waialua	United States	0.3
	19 Aug 2026 01:15	Kaanapali	United States	0.3
	19 Aug 2026 01:15	Puukolii	United States	0.3
	19 Aug 2026 01:15	Lahaina	United States	0.3
	20 Aug 2026 22:45	Kahului	United States	0.3
	20 Aug 2026 22:45	Kihei	United States	0.3
	20 Aug 2026 22:45	Puunene	United States	0.3
	20 Aug 2026 22:45	Village Eight	United States	0.3
	20 Aug 2026 22:45	Hawaiian Village	United States	0.3
	20 Aug 2026 22:45	Paia	United States	0.3
	20 Aug 2026 22:45	Haiku	United States	0.3
	20 Aug 2026 22:45	Pauwela	United States	0.3
	20 Aug 2026 22:45	Ulumalu	United States	0.3
	20 Aug 2026 22:45	Kailua	United States	0.3
	20 Aug 2026 22:45	Wailua	United States	0.3
	21 Aug 2026 00:15	Kahakuloa	United States	0.3
	21 Aug 2026 00:15	Maalaea	United States	0.3
	21 Aug 2026 00:15	Waihee	United States	0.3
	21 Aug 2026 00:15	Hyashi Village	United States	0.3
	21 Aug 2026 00:15	Wailuku	United States	0.3
	19 Aug 2026 00:00	Crater Village	United States	0.3
	19 Aug 2026 00:00	Honokahua	United States	0.3
	19 Aug 2026 00:00	Mahinahina Camp	United States	0.3
	19 Aug 2026 00:00	Kapalua	United States	0.3
	19 Aug 2026 00:00	Olowalu	United States	0.3
	20 Aug 2026 14:30	Kaaawa	United States	0.3
	20 Aug 2026 14:30	Honolulu	United States	0.3
	20 Aug 2026 14:30	Kahana	United States	0.3
	20 Aug 2026 14:30	Kahaluu	United States	0.3
	20 Aug 2026 14:30	Ahuimanu	United States	0.3
	20 Aug 2026 14:30	Heeia	United States	0.3
	20 Aug 2026 14:30	Kaneohe	United States	0.3
	20 Aug 2026 14:30	Maunawili	United States	0.3
	20 Aug 2026 14:30	Aina Haina	United States	0.3
	20 Aug 2026 14:30	Kaneohe Station	United States	0.3
	20 Aug 2026 14:30	Kailua	United States	0.3
	20 Aug 2026 14:30	Lanikai	United States	0.3
	20 Aug 2026 14:30	Waimanalo	United States	0.3
	20 Aug 2026 14:30	Maunalua	United States	0.3
	19 Aug 2026 01:15	Kualapuu	United States	0.2
	19 Aug 2026 01:15	Halawa	United States	0.2
	19 Aug 2026 22:00	Waimea	United States	0.2
	19 Aug 2026 22:00	Sunset Beach	United States	0.2
	19 Aug 2026 22:00	Pupukea	United States	0.2
	19 Aug 2026 22:00	Waialee	United States	0.2
	19 Aug 2026 22:00	Kawela Bay	United States	0.2
	19 Aug 2026 22:00	Marconi	United States	0.2
	19 Aug 2026 22:00	Kahuku	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
	20 Aug 2026 01:15	Makaha	United States	0.2
	20 Aug 2026 01:15	Makaha Valley	United States	0.2
	20 Aug 2026 01:15	Mokuleia	United States	0.2
	20 Aug 2026 01:15	Dillingham Ranch	United States	0.2
	20 Aug 2026 01:15	Waialua	United States	0.2
	20 Aug 2026 01:15	Haleiwa	United States	0.2
	20 Aug 2026 01:15	Kamooloa	United States	0.2
	20 Aug 2026 01:15	Kawailoa Camp	United States	0.2
	20 Aug 2026 01:15	Kawailoa Beach	United States	0.2
	20 Aug 2026 12:45	Halena	United States	0.2
	20 Aug 2026 12:45	Wahilauhue	United States	0.2
	20 Aug 2026 12:45	Kepuhi	United States	0.2
	20 Aug 2026 12:45	Mauna Loa	United States	0.2
	20 Aug 2026 12:45	Moomomi	United States	0.2
	20 Aug 2026 12:45	Hoolehua	United States	0.2
	20 Aug 2026 12:45	Kalaupapa	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
	21 Aug 2026 06:45	Nahiku	United States	0.2
	18 Aug 2026 21:00	Aiea	United States	0.2
	18 Aug 2026 21:00	Halawa	United States	0.2
	18 Aug 2026 21:00	Halawa Heights	United States	0.2
	18 Aug 2026 21:00	Aliamanu	United States	0.2
	18 Aug 2026 21:00	Waikane	United States	0.2
	18 Aug 2026 21:00	Fort Shafter	United States	0.2
	19 Aug 2026 05:45	Weloka	United States	0.2
	19 Aug 2026 05:45	Ninole	United States	0.2
	19 Aug 2026 05:45	Hakalau	United States	0.2
	19 Aug 2026 05:45	Honomu	United States	0.2
	19 Aug 2026 05:45	Pepeekeo	United States	0.2
	19 Aug 2026 05:45	Wainaku	United States	0.2
	19 Aug 2026 05:45	Papaikou	United States	0.2
	19 Aug 2026 05:45	Paukaa	United States	0.2
	19 Aug 2026 05:45	Hilo	United States	0.2
	19 Aug 2026 08:15	Ulupalakua	United States	0.2
	21 Aug 2026 05:30	Napari	Kiribati	0.2
	21 Aug 2026 05:30	Weston Point	Kiribati	0.2
	18 Aug 2026 21:15	Kaupo	United States	0.1
	18 Aug 2026 21:15	Kipahulu	United States	0.1
	18 Aug 2026 21:15	Kaeleku	United States	0.1
	18 Aug 2026 21:15	Muolea	United States	0.1
	18 Aug 2026 21:15	Haou	United States	0.1
	18 Aug 2026 21:15	Puuiki	United States	0.1
	18 Aug 2026 21:15	Hana	United States	0.1
	19 Aug 2026 02:00	Kiholo	United States	0.1
	19 Aug 2026 02:00	Weliweli	United States	0.1
	19 Aug 2026 02:00	Anaehoomalu	United States	0.1
	19 Aug 2026 02:00	Puako	United States	0.1
	19 Aug 2026 02:00	Waikoloa Village	United States	0.1
	19 Aug 2026 02:00	Kawaihae	United States	0.1
	21 Aug 2026 06:45	Waipio	United States	0.1
	21 Aug 2026 06:45	Kukuihaele	United States	0.1
	21 Aug 2026 06:45	Honokaa	United States	0.1
	18 Aug 2026 13:00	Mahukona	United States	0.1
	18 Aug 2026 13:00	Hawi	United States	0.1
	18 Aug 2026 13:00	Kapaau	United States	0.1
	18 Aug 2026 13:00	Halaula	United States	0.1
	18 Aug 2026 13:00	Makapala	United States	0.1
	18 Aug 2026 13:00	Niulii	United States	0.1
	20 Aug 2026 11:15	Mahaiula	United States	0.1
	20 Aug 2026 11:15	Kaupulehu	United States	0.1
	20 Aug 2026 11:15	Waipio	United States	0.1
	20 Aug 2026 11:15	Pearl City	United States	0.1
	20 Aug 2026 11:15	Waimalu	United States	0.1
	20 Aug 2026 10:15	Puuwai	United States	0.1
	18 Aug 2026 23:00	Paauilo	United States	0.1
	18 Aug 2026 23:00	Kukaiau	United States	0.1
	18 Aug 2026 23:00	Ookala	United States	0.1
	18 Aug 2026 23:00	Laupahoehoe	United States	0.1
	18 Aug 2026 23:00	Papaaloa	United States	0.1
	20 Aug 2026 11:30	Ewa	United States	0.1
	20 Aug 2026 11:30	Honouliuli	United States	0.1
	20 Aug 2026 11:30	Ewa Gentry	United States	0.1
	20 Aug 2026 11:30	Village Park	United States	0.1
	20 Aug 2026 11:30	Waipahu	United States	0.1
	20 Aug 2026 11:30	Ewa Beach	United States	0.1
	20 Aug 2026 11:30	Iroquois Point	United States	0.1
	20 Aug 2026 11:30	Hickam Housing	United States	0.1
	20 Aug 2026 11:30	Barbers Point Housing	United States	0.1
	20 Aug 2026 11:15	Waieli	United States	0.1
	20 Aug 2026 11:15	Mana	United States	0.1
	20 Aug 2026 11:15	Kalalau	United States	0.1
	20 Aug 2026 11:00	Nonopapa	United States	0.1
	20 Aug 2026 11:00	Kiekie	United States	0.1
	20 Aug 2026 11:15	Kahaino	United States	0.1
	20 Aug 2026 11:30	Waianae	United States	0.1
	20 Aug 2026 11:30	Maili	United States	0.1
	20 Aug 2026 11:30	Nanakuli	United States	0.1
	20 Aug 2026 11:15	Kekaha	United States	0.1
	20 Aug 2026 11:15	Waimea	United States	0.1
	20 Aug 2026 11:15	Pakala Village	United States	0.1
	20 Aug 2026 11:15	Makaweli	United States	0.1
	20 Aug 2026 11:15	Kaumakani	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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