Alert archive / Hawaii / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 6, NWS Honolulu, HI

December 19, 2022Hawaii County, Hawaii

NWS Honolulu, HI issued this severe thunderstorm warning at Dec 19, 2022, 4:47 PM HST for Hawaii County, Hawaii. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Dec 19, 2022, 4:47 PM HST (02:47 UTC)
Expired: Dec 19, 2022, 5:30 PM HST
In force: 43 min
Issued by: NWS Honolulu, HI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Hawaii County, HI

The radar

The South Shore radar (PHWA), 57 km from the middle of the area, began a volume at 02:48 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Dec 19, 7:59 AM HST	Severe Thunderstorm Watch	SPC	12 hr

The nearest sounding before it

Lihue, (PHLI), launched 00:00Z, 2.8 hours before the alert went out and 478 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 5072 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 57 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Dec 19, 4:13 PM HST, 34 minutes earlier.

Area forecast discussion, Dec 19, 4:13 PM HST, 34 minutes before

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In the hours before

Local storm report, Dec 19, 11:55 AM HST, 4 hours 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
1155 AM HST MON DEC 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0920 PM     FLASH FLOOD      WAIKOLOA VILLAGE        19.94N 155.79W
12/18/2022                   HAWAII             HI   EMERGENCY MNGR

            HI-190 CLOSED NEAR MILE MARKER 5-6, DEBRIS
            ON RD.

&&

Local storm report, Dec 19, 12:03 PM HST, 4 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
1203 PM HST MON DEC 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0920 PM     FLASH FLOOD      KAWAIHAE                20.04N 155.83W
12/18/2022                   HAWAII             HI   EMERGENCY MNGR

            HI 270 CLOSED FROM MILE MARKER 10-11 DUE TO
            DEBRIS ON RD.

&&

Local storm report, Dec 19, 12:47 PM HST, 4 hours before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
1247 PM HST MON DEC 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1155 AM     TSTM WND DMG     WAIPAHU                 21.39N 158.01W
12/19/2022                   HONOLULU           HI   TRAINED SPOTTER

            SHINGLES BLOWN OFF ROOF. 40 MPH WIND.

&&

Local storm report, Dec 19, 1:09 PM HST, 3 hours 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HONOLULU HI
109 PM HST MON DEC 19 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1145 AM     TSTM WND DMG     1 E KAPOLEI             21.33N 158.05W
12/19/2022                   HONOLULU           HI   PUBLIC

            VIDEO SURFACED OF TREES DOWN IN THE KA
            MAKANA ALII SHOPPING CENTER PARKING LOT.

&&

GK

Special weather statement, Dec 19, 3:15 PM HST, 1 hour 32 minutes before

Special Weather Statement
National Weather Service Honolulu HI
315 PM HST Mon Dec 19 2022

HIZ026-054-200145-
Kohala HI-Big Island North HI-
315 PM HST Mon Dec 19 2022

...A strong thunderstorm will impact portions of Hawaii in Hawaii
County through 345 PM HST...

At 315 PM HST, Doppler radar was tracking a strong thunderstorm over
Halaula and Hawi, or 40 miles north of Kailua-Kona, moving northeast
at 30 mph.

HAZARD...Wind gusts of 50 to 55 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

Locations impacted include...
Kapaau, Pololu Valley, Kohala Ranch, Hawi, Halaula, Waimanu Valley
and Kawaihae.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 800 PM HST for
Hawaii.

&&

LAT...LON 2005 15584 2009 15588 2011 15588 2027 15587
      2025 15577 2022 15573 2020 15573 2017 15567
      2014 15562
TIME...MOT...LOC 0115Z 247DEG 25KT 2020 15579

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...55 MPH

R Ballard

Special weather statement, Dec 19, 3:54 PM HST, 53 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
Dec 19, 2:00 PM HST	Areal Flood Advisory	HFO	Kalawao	3 hr
Dec 19, 2:11 PM HST	Severe Thunderstorm Warning	HFO	Kalawao	49 min
Dec 19, 3:00 PM HST	Special Marine Warning	HFO		2 hr
Dec 19, 3:08 PM HST	Flash Flood Warning	HFO	Hawaii	3 hr
Dec 19, 3:15 PM HST	Special Weather Statement	HFO		30 min
Dec 19, 3:35 PM HST	Wind Advisory	HFO	Hawaii, Honolulu, Kauai, Kalawao	25 hr
Dec 19, 3:54 PM HST	Special Weather Statement	HFO	Hawaii	66 min
Dec 19, 3:59 PM HST	Flash Flood Warning	HFO	Hawaii	5 hr
Dec 19, 4:08 PM HST	Severe Thunderstorm Warning Considerable damage threat	HFO	Hawaii	52 min
Dec 19, 6:33 PM HST	Special Marine Warning	HFO		117 min
Dec 19, 7:54 PM HST	Small Craft Advisory	HFO		62 hr
Dec 19, 8:21 PM HST	High Surf Advisory	HFO	Hawaii	17 hr
Dec 20, 1:00 PM HST	High Surf Advisory	HFO	Kalawao	15 hr

Nearby

Severe Thunderstorm Warnings in Hawaii, 2022 Every severe thunderstorm warning in 2022

Sources

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