Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 54, NWS Milwaukee, WI

May 30, 2006Racine County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at May 30, 2006, 5:27 PM CDT for Racine County, Wisconsin. It was in force for 48 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: May 30, 2006, 5:27 PM CDT (22:27 UTC)
Expired: May 30, 2006, 6:15 PM CDT
In force: 48 min
Issued by: NWS Milwaukee, WI
Area: Counties, with a storm outline in the text

County Racine County, WI

The radar

The Milwaukee radar (KMKX), 66 km from the middle of the area, began a volume at 22:30 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.5 hours before the alert went out and 196 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: 1057 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1203 m above ground
0-6 km bulk shear: 0 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 0 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 Milwaukee, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at May 30, 2:30 PM CDT, 2 hours 57 minutes earlier.

Area forecast discussion, May 30, 2:30 PM CDT, 2 hours 57 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
230 PM CDT TUE MAY 30 2006

.DISCUSSION...SHORT TERM FORECAST FOCUS ON HEAVY RAINFALL TNGT INTO
WED WITH CHC RETURNING LTR IN WEEK. VERY TROPICAL AIR MASS WITH GOES
PW SOUNDER ESTIMATING VALUES OF 1.5 TO 2.0 INCHES WHICH IS CLOSING
IN ON 200 PERCENT OF NORMAL.  FIRST MESOSCALE CONVECTIVE VORTEX
GENERATED BY LAST NIGHTS IA CONVECTION TRIGGERED SCATTERED MORNING
AND EARLY AFTN STORMS WHICH DEPOSITED AS MUCH AS 2 TO 3 INCHES
AROUND SHEBOYGAN AND WEST OF MINERAL POINT.  STREET FLOODING
REPORTED IN KMRJ WITH HEAVY RAINFALL.  RAINFALL ESTIMATES APPEAR IN
BALL PARK AS NOT A LOT OF HAIL REPORTED. WEAK SURFACE BOUNDARY FM
SWRN WI INTO THE NE EXPCD TO SAG SLOWLY SWD NEXT 12 HOURS...SETTING
UP LOW LEVEL BAROCLINICITY ACRS SRN WI.  MOST IMPORTANT...SECOND MCV
DEPICTED VERY WELL BY VSBL SAT IMAGERY JUST SOUTH OF KMLI WL BE
PUSHING NEWD ACRS SRN WI THRU TNGT.  CONVECTION ALREADY BEGINNING TO
REFIRE ASSOCD WITH THIS FEATURE OVR ERN IA.  FLASH FLOOD GUIDANCE
VALUES FM NCRFC STILL ON HIGH SIDE BUT WITH MBE VELOCITY LESS THAN
10 KNOTS IN PARTS OF CWA...CAN NOT IGNORE FLASH FLOOD THREAT.  WOULD
LIKE TO SEE BETTER LOW LEVEL MOISTURE FLUX CONVERGENCE BUT 925MB
WINDS NOW FM THE SOUTH AT 15 KTS FUNNELING INTO SRN WI.  HENCE ENUF
TO WARRANT ISSUING FLASH FLOOD WATCH BEGINNING LATE AFTN CONTG THRU
TNGT FOR ENTIRE AREA.

DEFORMATION ZONE PRECIP CONTINUES INTO WED MRNG BFR TAPERING OFF AS
DRIER AIR PUSHES IN FROM THE NORTH...WITH WK SUBSIDENCE SETTLING IN
FOR WED NGT...WL RMV LOW POPS.

WEAK SECONDARY SHORT WAVE TROF IN NORTHWEST FLOW STILL MAY BRING
SOME CONVECTION IN LATR THU INTO THU NGT.  BETTER AGREEMENT IN
EXTENDED GUIDANCE FOR THIS WEEKEND INTO EARLY NEXT WEEK...HWVR STILL
QUITE A BIT OF DIFFERENCE IN ENSEMBLE MEMBERS ON 6/4.  EMCWF...UKMT
AND GFS NOW SHOWING MORE POTENT SHORT WAVE TROF MOVING THRU SUN/SUN
NGT TIME FRAME.  GFS TRYING TO PULL CDFNT THRU WHILE ECWMF
MAINTAINING MORE OF AN ORGANIZING WMFNT ACRS UPR MIDWEST.  UKMT
LEANING TWD GFS SCENARIO...SO STILL ALOT OF UNCERTAINTY ON NUANCES
OF WEEKEND FORECAST...BUT ENUF CONFIDENCE TO WARRENT ADDING SML POPS
IN BEGINNING SAT NGT INTO SUN NGT.

&&

.MKX WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH LATE AFTN/TNGT ENTIRE CWA.

&&

MBK

Hazardous weather outlook, May 30, 11:45 AM CDT, 5 hours 42 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1145 AM CDT TUE MAY 30 2006

WIZ046-047-051-052-056>060-062>072-311100-
MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE-
WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE-
LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA-
1145 AM CDT TUE MAY 30 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
WISCONSIN...SOUTH CENTRAL WISCONSIN AND SOUTHEAST WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS. NUMEROUS
THUNDERSTORMS ACROSS SOUTHERN WISCONSIN WILL PRODUCE AREAS OF HEAVY
RAINFALL. THE POTENTIAL FOR HEAVY RAINFALL WILL CONTINUE TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY
THUNDERSTORMS ARE LIKELY WEDNESDAY...DIMINISHING WEDNESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

LMZ643>646-665-311100-
SHEBOYGAN TO PORT WASHINGTON-
PORT WASHINGTON TO NORTH POINT LIGHTHOUSE-
NORTH POINT LIGHTHOUSE TO WIND POINT-
WIND POINT TO WINTHROP HARBOR ILLINOIS-
WISCONSIN ADJACENT OPEN WATERS OF LAKE MICHIGAN TO MID LAKE-
1145 AM CDT TUE MAY 30 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE LIKELY THIS AFTERNOON AND TONIGHT. THERE IS A
SLIGHT RISK OF SEVERE THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS ARE LIKELY WEDNESDAY...DIMINISHING WEDNESDAY NIGHT.

COLLAR

In the hours before

Local storm report, May 30, 1:00 PM CDT, 4 hours 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
100 PM CDT TUE MAY 30 2006

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

1245 PM     HAIL             OAK CREEK               42.88N 87.90W
05/30/2006  E0.88 INCH       MILWAUKEE          WI   AMATEUR RADIO

            ESTIMATED NICKEL SIZE HAIL 1/4 MILE NORTHEAST OF OAK
            CREEK.

&&

WOOD

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 11:51 AM CDT	Flash Flood Warning	MKX	Sheboygan	114 min
May 30, 12:28 PM CDT	Severe Thunderstorm Warning	MKX	Racine	47 min
May 30, 2:21 PM CDT	Flash Flood Watch	MKX	Columbia, Dane, Dodge, Fond du Lac, Green, Green Lake and 14 more	17 hr
May 30, 2:43 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Rock	20 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2006 Every severe thunderstorm warning in 2006

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.