Alert archive / Hawaii / Special Weather Statements in 2021

Special Weather Statement, NWS Honolulu, HI

March 9, 2021Kauai County, Hawaii

NWS Honolulu, HI issued this special weather statement at Mar 9, 2021, 2:21 PM HST for Kauai County, Hawaii. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 9, 2021, 2:21 PM HST (00:21 UTC)
Expired
Mar 9, 2021, 3:00 PM HST
In force
39 min
Issued by
NWS Honolulu, HI

County Kauai County, HI

The radar

The South Kauai radar (PHKI), 36 km from the middle of the area, began a volume at 00:21 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 nearest sounding before it

Lihue, (PHLI), launched 00:00Z, 0.4 hours before the alert went out and 26 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-pSkew-T log-p diagram, Lihue, at 00:00Z on 2021-03-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 295 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lihue, at 00:00Z on 2021-03-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
295 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
704 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

303 
WWHW80 PHFO 100021
SPSHFO

Special Weather Statement
National Weather Service Honolulu HI
221 PM HST Tue Mar 9 2021

HIZ002-004-100100-
Kauai Windward-Kauai Mountains-
221 PM HST Tue Mar 9 2021

...A STRONG THUNDERSTORM WILL AFFECT KAUAI IN KAUAI COUNTY...

At 220 PM HST, a strong thunderstorm was located near Moloaa, or 20
miles north of Lihue, moving west at 20 mph.

Wind gusts up to 50 mph and pea size hail are possible with this 
storm as it moves along the north shore of Kauai between 230 and 330 
pm.

Locations impacted include...
Princeville, Kilauea, Anahola, Moloaa, Hanalei, Na Pali State Park,
Haena, Wainiha, Alakai Swamp Trails and Kalihiwai.

LAT...LON 2221 15937 2221 15934 2215 15930 2209 15959
      2222 15960 2223 15956 2221 15950 2223 15949
      2222 15943 2224 15940
TIME...MOT...LOC 0020Z 085DEG 17KT 2226 15927 

$$

R Ballard

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 9, 2:15 PM HSTSpecial Marine WarningHFO30 min
Mar 9, 2:44 PM HSTSpecial Marine WarningHFO46 min
Mar 9, 3:08 PM HSTSpecial Weather StatementHFOKauai37 min
Mar 9, 3:17 PM HSTSpecial Marine WarningHFO88 min
Mar 9, 3:21 PM HSTFlash Flood Warning EmergencyConsiderable damage threatHFOHonolulu9 hr
Mar 9, 3:24 PM HSTSpecial Marine WarningHFO64 min
Mar 9, 3:47 PM HSTAreal Flood AdvisoryHFOKauai43 min
Mar 9, 4:18 PM HSTSpecial Weather StatementHFOKauai57 min
Mar 9, 4:30 PM HSTFlash Flood WarningHFOKauai17 hr
Mar 9, 8:33 PM HSTSpecial Marine WarningHFO87 min
Mar 9, 10:44 PM HSTSpecial Marine WarningHFO2 hr
Mar 9, 10:56 PM HSTAreal Flood AdvisoryHFOKalawao3 hr
Mar 9, 11:03 PM HSTSpecial Marine WarningHFO93 min
Mar 9, 11:16 PM HSTSpecial Marine WarningHFO76 min
Mar 10, 12:45 AM HSTSpecial Marine WarningHFO105 min
Mar 10, 1:02 AM HSTAreal Flood AdvisoryHFOHawaii4 hr
Mar 10, 2:20 AM HSTSpecial Marine WarningHFO115 min
Mar 10, 3:42 AM HSTSpecial Marine WarningHFO2 hr
Mar 10, 4:43 AM HSTSpecial Marine WarningHFO2 hr
Mar 10, 5:26 AM HSTFlash Flood WarningHFOHawaii3 hr
Mar 10, 5:47 AM HSTSpecial Marine WarningHFO118 min
Mar 10, 6:36 AM HSTFlash Flood WarningHFOHawaii3 hr
Mar 10, 7:43 AM HSTSpecial Marine WarningHFO107 min
Mar 10, 9:06 AM HSTAreal Flood AdvisoryHFOHawaii115 min
Mar 10, 9:11 AM HSTAreal Flood AdvisoryHFOKauai9 hr
Mar 10, 9:17 AM HSTSpecial Marine WarningHFO118 min
Mar 10, 10:11 AM HSTHigh Surf AdvisoryHFOHonolulu, Kalawao29 hr
Mar 10, 11:11 AM HSTSpecial Marine WarningHFO2 hr
Mar 10, 1:09 PM HSTAreal Flood AdvisoryHFOHonolulu36 min
Mar 10, 1:10 PM HSTSpecial Marine WarningHFO110 min
Mar 10, 1:45 PM HSTFlash Flood WarningHFOHonolulu3 hr

Nearby

Special Weather Statements in Hawaii, 2021Every special weather statement in 2021

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.