Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 196, NWS Twin Cities, MN

July 27, 2002Polk County, Wisconsin; Chisago County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 27, 2002, 2:03 PM CDT for Polk County, Wisconsin; Chisago County, Minnesota. It was in force for 42 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 27, 2002, 2:03 PM CDT (19:03 UTC)
Expired
Jul 27, 2002, 2:45 PM CDT
In force
42 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Chisago County, MN, Polk County, WI

The radar

The Minneapolis radar (KMPX), 95 km from the middle of the area, began a volume at 19:04 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

TimeReportWhereRemark
Jul 27, 2:35 PM CDTThunderstorm Wind 55 ERush City, MNTrees down. Boats blown into each other on Rush Lake.

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 watch it was issued in

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

IssuedProductOfficeLasted
Jul 27, 12:00 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 7.1 hours before the alert went out and 96 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, Minneapolis, MN at 12:00Z on 2002-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 485 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, Minneapolis, MN at 12:00Z on 2002-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.19395878Sfc1 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
485 J/kg
Mixed-layer CIN
-155 J/kg
Mixed-layer LCL
1016 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

084 
WUUS53 KMPX 271903
SVRMSP
MNC025-WIC095-271945-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
203 PM CDT SAT JUL 27 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHISAGO COUNTY IN EAST CENTRAL MINNESOTA
  POLK COUNTY IN NORTHWEST WISCONSIN

* UNTIL 245 PM CDT

* AT 203 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH DAMAGING
  WINDS 7 MILES WEST OF RUSH CITY...OR ABOUT 9 MILES NORTHEAST OF
  CAMBRIDGE...MOVING EAST AT 35 MPH.

* SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...
  BALSAM LAKE.
  NORTH BRANCH.
  RUSH CITY.
  HARRIS.
  FREDERIC.
  LUCK.

LARGE HAIL AND DAMAGING WINDS ARE LIKELY WITH THIS STORM. TAKE COVER
IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4574 9310 4558 9309 4558 9301 4538 9299
          4531 9280 4531 9249 4569 9234

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 27, 2:49 PM CDTSevere Thunderstorm WarningMPXPolk41 min
Jul 27, 4:15 PM CDTSevere Thunderstorm WarningMPXRusk45 min
Jul 27, 10:15 AM CDTSevere Thunderstorm WarningMPXStevens30 min
Jul 27, 11:20 AM CDTSevere Thunderstorm WarningMPXPope40 min
Jul 27, 12:02 PM CDTSevere Thunderstorm WarningMPXPope, Stearns43 min
Jul 27, 12:25 PM CDTSevere Thunderstorm WarningMPXMorrison50 min
Jul 27, 12:46 PM CDTSevere Thunderstorm WarningMPXBenton, Stearns44 min
Jul 27, 12:56 PM CDTSevere Thunderstorm WarningMPXKandiyohi49 min
Jul 27, 1:10 PM CDTSevere Thunderstorm WarningMPXMille Lacs50 min
Jul 27, 1:15 PM CDTSevere Thunderstorm WarningMPXMorrison30 min
Jul 27, 1:30 PM CDTSevere Thunderstorm WarningMPXIsanti, Kanabec45 min
Jul 27, 1:35 PM CDTSevere Thunderstorm WarningMPXMeeker, Stearns40 min
Jul 27, 1:45 PM CDTSevere Thunderstorm WarningMPXKandiyohi45 min
Jul 27, 1:58 PM CDTSevere Thunderstorm WarningMPXWright47 min
Jul 27, 2:17 PM CDTSevere Thunderstorm WarningMPXMeeker43 min
Jul 27, 3:40 PM CDTSevere Thunderstorm WarningMPXCarver, Hennepin, Wright50 min
Jul 27, 4:22 PM CDTSevere Thunderstorm WarningMPXRamsey, Washington38 min
Jul 27, 6:33 PM CDTSevere Thunderstorm WarningMPXFaribault, Freeborn42 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2002Severe Thunderstorm Warnings in Minnesota, 2002Every 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.