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	140 km/h
Maximum storm surge	0.4 m (20 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	140 km/h	0.4 m	257 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

Wind exposed population - AoIs

No exposed population (in Tropical Storm or higher) based on the bulletin of 20 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	76	-	-	-	-	-	-	-
12	17 Aug 2026 12:00	76	-	-	-	-	-	-	-
13	18 Aug 2026 00:00	97	-	-	-	-	-	-	-
14	18 Aug 2026 12:00	115	-	-	-	-	-	-	-
15	19 Aug 2026 00:00	122	-	-	-	-	-	-	-
16	19 Aug 2026 12:00	148	-	-	-	-	-	-	-
17	20 Aug 2026 00:00	169	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

675 mm

No people can be affected by rain higher than 100mm (see SSHS)

Rain exposed population - AoIs

No exposed population (greater than 50mm) based on the bulletin of 20 Aug 2026 00:00 UTC

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	237	-	-	-	-	-	-	-
15	19 Aug 2026 00:00	270	-	-	-	-	-	-	-
16	19 Aug 2026 12:00	212	-	-	-	-	-	-	-
17	20 Aug 2026 00:00	336	-	-	-	-	-	-	-

Impact estimation for the next 72h

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StormSurge

0.4 m

The maximum Storm surge height is 0.4m in Kahului, United States. This height is estimated for 20 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 20 Aug 2026 00:00 UTC

Level	Date (UTC)	Name	Country	Storm surge height (m)
	20 Aug 2026 22:45	Kahului	United States	0.4
	20 Aug 2026 22:45	Kihei	United States	0.4
	20 Aug 2026 22:45	Puunene	United States	0.4
	20 Aug 2026 22:45	Village Eight	United States	0.4
	20 Aug 2026 22:45	Hawaiian Village	United States	0.4
	20 Aug 2026 22:45	Paia	United States	0.4
	20 Aug 2026 22:45	Haiku	United States	0.4
	20 Aug 2026 22:45	Pauwela	United States	0.4
	20 Aug 2026 22:45	Ulumalu	United States	0.4
	20 Aug 2026 22:45	Kailua	United States	0.4
	20 Aug 2026 22:45	Wailua	United States	0.4
	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
	21 Aug 2026 00:00	Umipaa	United States	0.3
	21 Aug 2026 00:00	Kaunakakai	United States	0.3
	21 Aug 2026 00:00	Kaumalapau	United States	0.3
	21 Aug 2026 00:00	Moku	United States	0.3
	21 Aug 2026 00:00	Kamalo	United States	0.3
	21 Aug 2026 00:00	Kaluaaha	United States	0.3
	21 Aug 2026 00:00	Keomuku	United States	0.3
	21 Aug 2026 00:00	Ualapue	United States	0.3
	21 Aug 2026 00:00	Pukoo	United States	0.3
	21 Aug 2026 00:00	Waialua	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
	22 Aug 2026 06:00	Waimea	United States	0.3
	22 Aug 2026 06:00	Sunset Beach	United States	0.3
	22 Aug 2026 06:00	Pupukea	United States	0.3
	22 Aug 2026 06:00	Waialee	United States	0.3
	22 Aug 2026 06:00	Kawela Bay	United States	0.3
	22 Aug 2026 06:00	Marconi	United States	0.3
	22 Aug 2026 06:00	Kahuku	United States	0.3
	22 Aug 2026 06:00	Laie	United States	0.3
	22 Aug 2026 06:00	Hauula	United States	0.3
	22 Aug 2026 06:00	Punaluu	United States	0.3
	22 Aug 2026 03:30	Crater Village	United States	0.3
	22 Aug 2026 03:30	Honokahua	United States	0.3
	22 Aug 2026 03:30	Mahinahina Camp	United States	0.3
	22 Aug 2026 03:30	Kapalua	United States	0.3
	20 Aug 2026 12:45	Halena	United States	0.3
	20 Aug 2026 12:45	Wahilauhue	United States	0.3
	20 Aug 2026 12:45	Kepuhi	United States	0.3
	20 Aug 2026 12:45	Mauna Loa	United States	0.3
	20 Aug 2026 12:45	Moomomi	United States	0.3
	20 Aug 2026 12:45	Hoolehua	United States	0.3
	20 Aug 2026 12:45	Kualapuu	United States	0.3
	20 Aug 2026 12:45	Kalaupapa	United States	0.3
	21 Aug 2026 07:00	Kaanapali	United States	0.2
	21 Aug 2026 07:00	Puukolii	United States	0.2
	21 Aug 2026 07:00	Lahaina	United States	0.2
	21 Aug 2026 07:00	Olowalu	United States	0.2
	20 Aug 2026 15:45	Keawakapu	United States	0.2
	20 Aug 2026 15:45	Makena	United States	0.2
	20 Aug 2026 15:45	Keoneoio	United States	0.2
	21 Aug 2026 06:45	Aiea	United States	0.2
	21 Aug 2026 06:45	Halawa	United States	0.2
	21 Aug 2026 06:45	Halawa Heights	United States	0.2
	21 Aug 2026 06:45	Aliamanu	United States	0.2
	21 Aug 2026 06:45	Waikane	United States	0.2
	21 Aug 2026 06:45	Fort Shafter	United States	0.2
	21 Aug 2026 07:15	Halawa	United States	0.2
	21 Aug 2026 06:45	Nahiku	United States	0.2
	21 Aug 2026 13:30	Napari	Kiribati	0.2
	21 Aug 2026 13:30	Weston Point	Kiribati	0.2
	22 Aug 2026 09:15	Makaha	United States	0.2
	22 Aug 2026 09:15	Makaha Valley	United States	0.2
	22 Aug 2026 09:15	Mokuleia	United States	0.2
	22 Aug 2026 09:15	Dillingham Ranch	United States	0.2
	22 Aug 2026 09:15	Waialua	United States	0.2
	22 Aug 2026 09:15	Haleiwa	United States	0.2
	22 Aug 2026 09:15	Kamooloa	United States	0.2
	22 Aug 2026 09:15	Kawailoa Camp	United States	0.2
	22 Aug 2026 09:15	Kawailoa Beach	United States	0.2
	22 Aug 2026 06:00	Kaeleku	United States	0.2
	22 Aug 2026 06:00	Hana	United States	0.2
	21 Aug 2026 03:00	Mahukona	United States	0.2
	21 Aug 2026 03:00	Hawi	United States	0.2
	21 Aug 2026 03:00	Kapaau	United States	0.2
	21 Aug 2026 03:00	Halaula	United States	0.2
	21 Aug 2026 03:00	Makapala	United States	0.2
	21 Aug 2026 03:00	Niulii	United States	0.2
	21 Aug 2026 01:30	Waipio	United States	0.2
	21 Aug 2026 01:30	Kukuihaele	United States	0.2
	21 Aug 2026 01:30	Honokaa	United States	0.2
	21 Aug 2026 00:45	Weloka	United States	0.2
	21 Aug 2026 00:45	Ninole	United States	0.2
	21 Aug 2026 00:45	Hakalau	United States	0.2
	21 Aug 2026 00:45	Honomu	United States	0.2
	21 Aug 2026 00:45	Pepeekeo	United States	0.2
	21 Aug 2026 00:45	Wainaku	United States	0.2
	21 Aug 2026 00:45	Papaikou	United States	0.2
	21 Aug 2026 00:45	Paukaa	United States	0.2
	21 Aug 2026 00:45	Hilo	United States	0.2
	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	Kiholo	United States	0.1
	20 Aug 2026 11:15	Weliweli	United States	0.1
	20 Aug 2026 11:15	Anaehoomalu	United States	0.1
	20 Aug 2026 11:15	Puako	United States	0.1
	20 Aug 2026 11:15	Waikoloa Village	United States	0.1
	20 Aug 2026 11:15	Kawaihae	United States	0.1
	21 Aug 2026 15:15	Ulupalakua	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
	22 Aug 2026 07:00	Paauilo	United States	0.1
	22 Aug 2026 07:00	Kukaiau	United States	0.1
	20 Aug 2026 10:15	Laupahoehoe	United States	0.1
	20 Aug 2026 10:15	Papaaloa	United States	0.1
	20 Aug 2026 11:15	Ewa	United States	0.1
	20 Aug 2026 11:15	Honouliuli	United States	0.1
	20 Aug 2026 11:15	Ewa Gentry	United States	0.1
	20 Aug 2026 11:15	Village Park	United States	0.1
	20 Aug 2026 11:15	Waipahu	United States	0.1
	20 Aug 2026 11:15	Ewa Beach	United States	0.1
	20 Aug 2026 11:15	Iroquois Point	United States	0.1
	20 Aug 2026 11:15	Hickam Housing	United States	0.1
	20 Aug 2026 14:45	Ookala	United States	0.1
	21 Aug 2026 10:00	Kaupo	United States	0.1
	21 Aug 2026 10:00	Kipahulu	United States	0.1
	21 Aug 2026 10:00	Muolea	United States	0.1
	21 Aug 2026 10:00	Haou	United States	0.1
	21 Aug 2026 10:00	Puuiki	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 11:15	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
	20 Aug 2026 11:15	Kahaino	United States	0.1
	20 Aug 2026 11:15	Nonopapa	United States	0.1
	20 Aug 2026 11:15	Kiekie	United States	0.1
	20 Aug 2026 11:30	Barbers Point Housing	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

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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.
The JRC is not responsible for any damage or loss resulting from the use of the information presented on this website.
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