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	United States,
Exposed population	30 thousand in Category 1 or higher
Maximum wind speed	166 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	166 km/h	0.3 m	327 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

Up to 30 thousand in Category 1 strength or higher (see SSHS)

Wind exposed population - AoIs

Estimations based on the bulletin of 21 Aug 2026 12:00 UTC (Overall situation)

Category	Country	Population
CAT. 5	United States	25,169
CAT. 4	United States	1,234
CAT. 3	United States	306
CAT. 2	United States	204
CAT. 1	United States	1,901
Tropical Storm	United States	11,910

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	140	-	-	-	-	-	-	-
18	20 Aug 2026 12:00	166	-	-	-	-	-	-	-
19	21 Aug 2026 00:00	158	-	-	-	-	-	-	-
20	21 Aug 2026 12:00	166	-	-	-	-	-	-	-

Download:

Impact estimation for the next 72h

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Rainfall

Rain exposed population - AoIs

Estimations based on the bulletin of 21 Aug 2026 12:00 UTC (Overall situation)

Level	Country	Population
500-750 mm	United States	1,779
250-500 mm	United States	128,638
100-250 mm	United States, Kiribati	202,299	+
	United States	191,193
	Kiribati	11,105
50-100 mm	United States	443,723	+
	United States	443,719
	Other countries	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	237	-	-	-	-	-	-	-
15	19 Aug 2026 00:00	270	-	-	-	-	-	-	-
16	19 Aug 2026 12:00	212	-	-	-	-	-	-	-
17	20 Aug 2026 00:00	257	-	-	-	-	-	-	-
18	20 Aug 2026 12:00	213	-	-	-	-	-	-	-
19	21 Aug 2026 00:00	291	-	-	-	-	-	-	-
20	21 Aug 2026 12:00	327	80 thousand			-	-	-	-	United States

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

Estimations based on the bulletin of 21 Aug 2026 12:00 UTC (Overall situation)

Level	Country	Population
0.25 - 0.5 m	United States	27,633	+
	United States	27,625
	Other countries	07

Storm Surge Exposed locations

Calculation based on the bulletin of 21 Aug 2026 12:00 UTC (Overall situation)

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
	23 Aug 2026 08:45	Keomuku	United States	0.3
	23 Aug 2026 08:45	Kaanapali	United States	0.3
	23 Aug 2026 08:45	Puukolii	United States	0.3
	23 Aug 2026 08:45	Lahaina	United States	0.3
	23 Aug 2026 08:45	Crater Village	United States	0.3
	23 Aug 2026 08:45	Honokahua	United States	0.3
	23 Aug 2026 08:45	Mahinahina Camp	United States	0.3
	23 Aug 2026 08:45	Kapalua	United States	0.3
	23 Aug 2026 08:45	Olowalu	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
	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	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
	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 15:45	Nahiku	United States	0.3
	16 Aug 2026 21:30	Makaha	United States	0.3
	16 Aug 2026 21:30	Makaha Valley	United States	0.3
	16 Aug 2026 21:30	Mokuleia	United States	0.3
	16 Aug 2026 21:30	Dillingham Ranch	United States	0.3
	16 Aug 2026 21:30	Waialua	United States	0.3
	16 Aug 2026 21:30	Haleiwa	United States	0.3
	16 Aug 2026 21:30	Kamooloa	United States	0.3
	16 Aug 2026 21:30	Kawailoa Camp	United States	0.3
	16 Aug 2026 21:30	Kawailoa Beach	United States	0.3
	16 Aug 2026 21:30	Waimea	United States	0.3
	16 Aug 2026 21:30	Sunset Beach	United States	0.3
	16 Aug 2026 21:30	Pupukea	United States	0.3
	16 Aug 2026 21:30	Waialee	United States	0.3
	16 Aug 2026 21:30	Kawela Bay	United States	0.3
	16 Aug 2026 21:30	Marconi	United States	0.3
	16 Aug 2026 21:30	Kahuku	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 19:00	Laie	United States	0.3
	21 Aug 2026 19:00	Hauula	United States	0.3
	21 Aug 2026 19:00	Punaluu	United States	0.3
	16 Aug 2026 03:15	Halawa	United States	0.2
	16 Aug 2026 01:30	Keawakapu	United States	0.2
	16 Aug 2026 01:30	Makena	United States	0.2
	16 Aug 2026 01:30	Keoneoio	United States	0.2
	16 Aug 2026 08:00	Ulupalakua	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
	16 Aug 2026 12:30	Mahukona	United States	0.2
	16 Aug 2026 12:30	Hawi	United States	0.2
	16 Aug 2026 12:30	Kapaau	United States	0.2
	16 Aug 2026 12:30	Halaula	United States	0.2
	16 Aug 2026 12:30	Makapala	United States	0.2
	16 Aug 2026 12:30	Niulii	United States	0.2
	23 Aug 2026 13:15	Napari	Kiribati	0.2
	23 Aug 2026 13:15	Weston Point	Kiribati	0.2
	16 Aug 2026 01:45	Mahaiula	United States	0.2
	16 Aug 2026 01:45	Kaupulehu	United States	0.2
	16 Aug 2026 01:45	Kiholo	United States	0.2
	16 Aug 2026 01:45	Weliweli	United States	0.2
	16 Aug 2026 01:45	Anaehoomalu	United States	0.2
	16 Aug 2026 01:45	Puako	United States	0.2
	16 Aug 2026 01:45	Waikoloa Village	United States	0.2
	16 Aug 2026 01:45	Kawaihae	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
	16 Aug 2026 08:15	Waipio	United States	0.2
	16 Aug 2026 08:15	Kukuihaele	United States	0.2
	16 Aug 2026 08:15	Honokaa	United States	0.2
	16 Aug 2026 12:30	Waipio	United States	0.2
	16 Aug 2026 12:30	Pearl City	United States	0.2
	16 Aug 2026 12:30	Waimalu	United States	0.2
	16 Aug 2026 03:30	Sea View	United States	0.2
	16 Aug 2026 03:30	Keauhou	United States	0.2
	16 Aug 2026 03:30	Kahaluu	United States	0.2
	16 Aug 2026 03:30	Captain Cook	United States	0.2
	16 Aug 2026 03:30	Napoopao	United States	0.2
	16 Aug 2026 03:30	Honaunau	United States	0.2
	16 Aug 2026 03:30	Hookena	United States	0.2
	16 Aug 2026 03:30	Keokea	United States	0.2
	16 Aug 2026 03:30	Kealia	United States	0.2
	16 Aug 2026 03:00	Waiahukini	United States	0.2
	16 Aug 2026 03:00	Kaalualu	United States	0.2
	16 Aug 2026 03:30	Milolii	United States	0.2
	16 Aug 2026 03:30	Papa	United States	0.2
	16 Aug 2026 12:15	Paauilo	United States	0.2
	16 Aug 2026 12:15	Kukaiau	United States	0.2
	16 Aug 2026 03:00	Naalehu	United States	0.2
	16 Aug 2026 03:00	Honuapo	United States	0.2
	16 Aug 2026 22:00	Puuwai	United States	0.2
	15 Aug 2026 20:45	Hilea	United States	0.2
	16 Aug 2026 22:00	Kahaino	United States	0.2
	16 Aug 2026 22:00	Nonopapa	United States	0.2
	16 Aug 2026 22:00	Kiekie	United States	0.2
	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	Kaeleku	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
	21 Aug 2026 10:00	Hana	United States	0.1
	16 Aug 2026 22:00	Waieli	United States	0.1
	16 Aug 2026 22:00	Mana	United States	0.1
	16 Aug 2026 22:00	Kalalau	United States	0.1
	16 Aug 2026 21:30	Haena	United States	0.1
	16 Aug 2026 21:30	Wainiha	United States	0.1
	16 Aug 2026 21:30	Hanalei	United States	0.1
	16 Aug 2026 21:30	Princeville	United States	0.1
	16 Aug 2026 12:30	Iroquois Point	United States	0.1
	16 Aug 2026 12:30	Hickam Housing	United States	0.1
	16 Aug 2026 22:00	Kekaha	United States	0.1
	16 Aug 2026 22:00	Waimea	United States	0.1
	16 Aug 2026 22:00	Pakala Village	United States	0.1
	16 Aug 2026 22:00	Makaweli	United States	0.1
	16 Aug 2026 22:00	Kaumakani	United States	0.1
	16 Aug 2026 01:45	Ookala	United States	0.1
	16 Aug 2026 12:30	Ewa	United States	0.1
	16 Aug 2026 12:30	Honouliuli	United States	0.1
	16 Aug 2026 12:30	Ewa Gentry	United States	0.1
	16 Aug 2026 12:30	Village Park	United States	0.1
	16 Aug 2026 12:30	Waipahu	United States	0.1
	16 Aug 2026 12:30	Ewa Beach	United States	0.1
	16 Aug 2026 22:15	Koloa	United States	0.1
	16 Aug 2026 22:15	Poipu	United States	0.1
	16 Aug 2026 22:15	Puhi	United States	0.1
	16 Aug 2026 22:15	Lihue	United States	0.1
	16 Aug 2026 22:15	Wailua Homesteads	United States	0.1
	16 Aug 2026 22:15	Kealia	United States	0.1
	16 Aug 2026 22:15	Hanamaulu	United States	0.1
	16 Aug 2026 22:15	Wailua	United States	0.1
	16 Aug 2026 22:15	Kapaa	United States	0.1
	16 Aug 2026 22:15	Kumukumu	United States	0.1
	16 Aug 2026 22:15	Kukuiula	United States	0.1
	16 Aug 2026 22:15	Kalaheo	United States	0.1
	16 Aug 2026 22:15	Lawai	United States	0.1
	16 Aug 2026 22:15	Omao	United States	0.1
	16 Aug 2026 22:15	Hanapepe	United States	0.1
	16 Aug 2026 22:15	Eleele	United States	0.1
	24 Aug 2026 04:15	Laupahoehoe	United States	0.1
	24 Aug 2026 04:15	Papaaloa	United States	0.1
	16 Aug 2026 21:30	Kilauea	United States	0.1
	16 Aug 2026 12:00	Barbers Point Housing	United States	0.1
	16 Aug 2026 21:45	Moloaa	United States	0.1
	15 Aug 2026 20:45	Royal Gardens	United States	0.1
	15 Aug 2026 20:45	Kupaahu	United States	0.1
	15 Aug 2026 20:45	Kalapana	United States	0.1
	16 Aug 2026 21:30	Anahola	United States	0.1
	16 Aug 2026 12:00	Waianae	United States	0.1
	16 Aug 2026 12:00	Maili	United States	0.1
	16 Aug 2026 12:00	Nanakuli	United States	0.1
	15 Aug 2026 20:45	Opihikao	United States	0.1
	16 Aug 2026 02:15	Hawaiian Paradise Park	United States	0.1
	16 Aug 2026 02:15	Makuu	United States	0.1
	15 Aug 2026 20:45	Pohoiki	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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