Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 47, NWS Milwaukee, WI

June 21, 2002Columbia County, Green Lake County, Marquette County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 21, 2002, 5:08 PM CDT for Columbia County, Green Lake County, Marquette County, Wisconsin. It was in force for 52 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 21, 2002, 5:08 PM CDT (22:08 UTC)
Expired: Jun 21, 2002, 6:00 PM CDT
In force: 52 min
Issued by: NWS Milwaukee, WI
Area: Whole counties

Counties Columbia County, WI, Green Lake County, WI, Marquette County, WI

The radar

The Milwaukee radar (KMKX), 99 km from the middle of the area, began a volume at 22:11 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 was reported inside it

Time	Report	Where	Remark
Jun 21, 5:15 PM CDT	Hail 0.75	Endeavor, WI
Jun 21, 6:05 PM CDT	Hail 0.75	Friesland, WI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.1 hours before the alert went out and 127 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: 1427 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: -11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KMKX 212208
SVRMKE
WIC021-047-077-212300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
507 PM CDT FRI JUN 21 2002

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN MARQUETTE COUNTY IN SOUTH CENTRAL WISCONSIN
  SOUTHERN GREEN LAKE COUNTY IN SOUTH CENTRAL WISCONSIN
  NORTHERN COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN

* UNTIL 600 PM CDT

* AT 507 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR ENDEAVOR...OR ABOUT 11 MILES NORTH OF
  PORTAGE...MOVING SOUTHEAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  PRINCETON AT 525 PM CDT.
  MARQUETTE AT 530 PM CDT.
  PARDEEVILLE AT 535 PM CDT.
  GREEN LAKE AT 540 PM CDT.

REMEMBER...SEVERE THUNDERSTORMS CAN AND DO PRODUCE TORNADOES WITH 
LITTLE OR NO ADVANCE WARNING.

HAIL UP TO 3/4 OF AN INCH IN DIAMETER AND WINDS GREATER THAN 60 MILES
AN HOUR ARE EXPECTED FROM THIS STORM. IF YOU ARE IN THE STORMS
PATH...SEEK SHELTER INDOORS.

COLLAR

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 Jun 21, 3:10 PM CDT, 1 hour 58 minutes earlier.

Area forecast discussion, Jun 21, 3:10 PM CDT, 1 hour 58 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
310 PM CDT FRI JUN 21 2002

FCST FOCUS ON PCPN TONIGHT AND HEAT INDICES FOR WEEKEND.

WEAK SFC BNDRY ACRS NRN IL INTO NERN IA...BUT VERY UNSTBL CONDS...HAS
BEEN PRODUCING ISOLD PULSING TSTMS SO FAR THIS AFTN...WITH LARGER AND
MORE ORGANIZED TSTM COMPLEXES IN SRN MN AND WCNTRL WI CLOSER TO H850
BNDRY AND WHERE RUC HAS BEEN TRACKING A 19 UNIT VORT MAX. AT THIS
POINT PRECIP IN SRN WI STILL APPEARS TO BE CHANCEY DEAL WITH BEST
POPS ACRS NRN AND WRN CWA. BUT CERTAINLY CAN NOT DISMISS CONVERGENCE
AND LIFT PROVIDED BY SFC BDNRY AS IT LIFTS NWD TNGT. ANY STORMS WL BE
HVY RAIN PRODUCERS AND SLO MOVERS AS BUFKIT SHOWING STORM MOTION
AT 5 TO 10 KNOTS.

WITH SFC BNDRY N OF CWA BY 12Z SAT HAVE OPTED TO CONTINUE DRY FCST
TREND THRU THE WEEKEND...ALTHO CAPES SPIKE INTO THE 2000 J/KG DO NOT
SEE ANY KICKER ATTM. WITH SRN WI SQUARELY IN THE WARM SECTION OVER
THE WEEKEND WITH SUSTAINED SWRLY FLO HAVE CRANKED UP THE DEW POINTS
INTO THE LOWER 70S AND NUDGED UP THE TEMPS INTO THE LOWER 90S WHICH
HAVE HAD THE EFFECT OF RAISING HEAT INDICES INTO THE 95 TO 100 DEGREE
RANGE. HWO WAS UPDATED EARLIER THIS MRNG TO REFLECT THE HAZARD OF
HEAT AND HUMIDITY.

ALTHO THE AVN MODEL ATTEMPTS TO SAG BNDRY SWD INTO CWA MONDAY HAVE
DECIDED TO STAY WITH ETA MODEL TREND OF KEEPING IT FARTHER N. THIS
PUSHES THE NEXT CHANCE OF PRECIP BACK INTO TUE AND WED...THEN DRY
AGAIN FOR THU AND FRI IN XTNDD FCST. TEMPS ARE A MIX OF FMR AND MEX
GUID.

.MKX...NONE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 5:23 PM CDT	Tornado Warning	MKX	Columbia	27 min
Jun 21, 5:37 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	53 min
Jun 21, 5:52 PM CDT	Tornado Warning	MKX	Columbia, Dodge	38 min
Jun 21, 6:26 PM CDT	Severe Thunderstorm Warning	MKX	Sauk	49 min
Jun 21, 6:32 PM CDT	Severe Thunderstorm Warning	MKX	Dodge	58 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2002 Every severe thunderstorm warning in 2002

Sources

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