Alert archive / Hawaii / Flash Flood Watches in 2018

Flash Flood Watch 4, NWS Honolulu, HI

February 21, 20184 counties in Hawaii

NWS Honolulu, HI issued this flash flood watch at Feb 21, 2018, 3:56 AM HST for 4 counties in Hawaii. It took effect at Feb 21, 2018, 6:00 PM HST. It was in force for 57 hr.

The area

The counties it named.

The facts

Issued: Feb 21, 2018, 3:56 AM HST (13:56 UTC)
In effect from: Feb 21, 2018, 6:00 PM HST
Expired: Feb 24, 2018, 3:16 AM HST
In force: 57 hr
Issued by: NWS Honolulu, HI
Flood severity: None

Counties Hawaii County, HI, Honolulu County, HI, Kalawao County, HI, Kauai County, HI

The radar

The Molokai radar (PHMO), 38 km from the middle of the area, began a volume at 13:59 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Honolulu, HI wrote its last area forecast discussion before this flash flood watch went out at Feb 21, 3:54 AM HST, 2 minutes earlier.

Area forecast discussion, Feb 21, 3:54 AM HST, 2 minutes before

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The office that day

Everything else NWS Honolulu, HI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 21, 3:55 AM HST	Winter Storm Watch	HFO	Hawaii	12 hr
Feb 21, 11:23 AM HST	Wind Advisory	HFO	Hawaii	4 hr

Nearby

Flash Flood Watches in Hawaii, 2018 Every flash flood watch in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.