Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 239, NWS Twin Cities, MN

June 26, 1998Chisago County, Washington County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 26, 1998, 11:36 PM CDT for Chisago County, Washington County, Minnesota. It was in force for 54 min. 3 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 26, 1998, 11:36 PM CDT (04:36 UTC)
Expired
Jun 27, 1998, 12:30 AM CDT
In force
54 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Chisago County, MN, Washington County, MN

The radar

The Minneapolis radar (KMPX), 70 km from the middle of the area, began a volume at 04:37 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
Jun 26, 11:50 PM CDTThunderstorm Wind 55Scandia, MNLarge trees blown down. Other damage reported in Forest Lake. Estimated windspeed.
Jun 26, 11:50 PM CDTThunderstorm Wind 80Stillwater, MNMarina damaged. Pier broke lose from shore with 25 boats, some still occupied. Two other piers heavily damaged. Wind damage also reported in Oak Park Heights, Lake Elmo and Oakdale. Large tree limbs and power lines down.
Jun 27, 12:07 AM CDTThunderstorm Wind 55Cottage Grove, MNLarge branches down. Estimated windspeed.

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
Jun 26, 8:30 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 4.6 hours before the alert went out and 72 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 00:00Z on 1998-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1872 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 00:00Z on 1998-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 311 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
1872 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
810 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
311 m²/s²
0-3 km storm-relative helicity
469 m²/s²
Significant tornado parameter
3.0
Supercell composite
26.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 270436 RRA
SVRMSP
MNC025-037-123-139-163-270530-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1136 PM CDT FRI JUN 26 1998

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHISAGO COUNTY IN EAST CENTRAL MINNESOTA
  DAKOTA COUNTY IN EAST CENTRAL MINNESOTA
  RAMSEY COUNTY IN EAST CENTRAL MINNESOTA
  SCOTT COUNTY IN EAST CENTRAL MINNESOTA
  WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 1230 AM CDT

* AT 1125 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE STORMS
  FROM CAMBRIDGE TO THE NORTHWESTERN MINNEAPOLIS SUBURBS...TO
  WACONIA...WHICH IS 30 MILES SOUTHWEST OF MINNEAPOLIS.  THE
  STORMS WERE MOVING SOUTHEAST AT 45 MPH.

* SOME LOCATIONS AFFECTED
    ST PAUL
    FOREST LAKE
    WOODBURY
    EAGAN
    BURNSVILLE
    PRIOR LAKE

DAMAGING WINDS ARE LIKELY.  POWER LINES HAVE BEEN DOWNED FROM
ST CLOUD TO BIG LAKE.  65 MPH WINDS OCCURRED IN MAPLE LAKE AT
1055 PM.  STAY INSIDE A STURDY BUILDING AND AWAY FROM WINDOWS.
A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES.
TDK

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 7:24 PM CDTSevere Thunderstorm WarningMPXAnoka, Chisago51 min
Jun 26, 7:34 PM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Stearns66 min
Jun 26, 7:38 PM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley62 min
Jun 26, 7:45 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Scott60 min
Jun 26, 7:49 PM CDTSevere Thunderstorm WarningMPXWright66 min
Jun 26, 8:07 PM CDTTornado WarningMPXMcLeod, Sibley48 min
Jun 26, 8:12 PM CDTTornado WarningMPXLe Sueur, Rice, Scott48 min
Jun 26, 8:19 PM CDTSevere Thunderstorm WarningMPXIsanti, Mille Lacs66 min
Jun 26, 8:25 PM CDTSevere Thunderstorm WarningMPXWashington50 min
Jun 26, 8:25 PM CDTSevere Thunderstorm WarningMPXRamsey50 min
Jun 26, 8:34 PM CDTSevere Thunderstorm WarningMPXCarver, Sibley56 min
Jun 26, 8:39 PM CDTSevere Thunderstorm WarningMPXStearns66 min
Jun 26, 8:50 PM CDTSevere Thunderstorm WarningMPXDakota, Scott65 min
Jun 26, 8:51 PM CDTTornado WarningMPXRice34 min
Jun 26, 9:00 PM CDTSevere Thunderstorm WarningMPXLac qui Parle, Yellow Medicine60 min
Jun 26, 9:10 PM CDTSevere Thunderstorm WarningMPXDouglas, Pope, Stevens60 min
Jun 26, 9:10 PM CDTSevere Thunderstorm WarningMPXChippewa, Swift60 min
Jun 26, 9:13 PM CDTTornado WarningMPXYellow Medicine47 min
Jun 26, 9:22 PM CDTFlash Flood WarningMPXCarver, Dakota, Hennepin, Le Sueur, Rice, Scott and 1 more3 hr
Jun 26, 9:22 PM CDTFlash Flood WarningMPXRamsey, Washington3 hr
Jun 26, 9:24 PM CDTTornado WarningMPXStearns31 min
Jun 26, 9:28 PM CDTTornado WarningMPXRice47 min
Jun 26, 9:41 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Stearns, Todd64 min
Jun 26, 9:51 PM CDTSevere Thunderstorm WarningMPXGoodhue64 min
Jun 26, 9:54 PM CDTTornado WarningMPXYellow Medicine46 min
Jun 26, 10:03 PM CDTTornado WarningMPXBenton, Stearns42 min
Jun 26, 10:06 PM CDTSevere Thunderstorm WarningMPXChippewa34 min
Jun 26, 10:15 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville60 min
Jun 26, 10:15 PM CDTSevere Thunderstorm WarningMPXMeeker60 min
Jun 26, 10:16 PM CDTSevere Thunderstorm WarningMPXMorrison64 min
Jun 26, 10:22 PM CDTSevere Thunderstorm WarningMPXLe Sueur, Rice53 min
Jun 26, 10:28 PM CDTFlash Flood WarningMPXGoodhue2 hr
Jun 26, 10:39 PM CDTSevere Thunderstorm WarningMPXSherburne, Wright66 min
Jun 26, 10:39 PM CDTSevere Thunderstorm WarningMPXMille Lacs66 min
Jun 26, 10:54 PM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley56 min
Jun 26, 11:00 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin65 min
Jun 26, 11:00 PM CDTSevere Thunderstorm WarningMPXIsanti65 min
Jun 26, 11:10 PM CDTSevere Thunderstorm WarningMPXMeeker, Renville35 min
Jun 26, 11:16 PM CDTSevere Thunderstorm WarningMPXCarver49 min
Jun 26, 11:33 PM CDTSevere Thunderstorm WarningMPXGoodhue42 min
Jun 26, 11:36 PM CDTSevere Thunderstorm WarningMPXDakota, Scott54 min
Jun 26, 11:36 PM CDTSevere Thunderstorm WarningMPXRamsey54 min
Jun 26, 11:45 PM CDTSevere Thunderstorm WarningMPXMcLeod, Sibley30 min
Jun 27, 12:17 AM CDTSevere Thunderstorm WarningMPXGoodhue, Le Sueur, Rice58 min
Jun 27, 12:44 AM CDTFlash Flood WarningMPXDakota, Goodhue, Rice2 hr
Jun 27, 12:44 AM CDTFlash Flood WarningMPXHennepin, Le Sueur, Scott2 hr
Jun 27, 12:44 AM CDTFlash Flood WarningMPXRamsey, Washington2 hr
Jun 27, 4:10 PM CDTSevere Thunderstorm WarningMPXMartin50 min
Jun 27, 4:31 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Watonwan59 min
Jun 27, 4:31 PM CDTSevere Thunderstorm WarningMPXFaribault59 min
Jun 27, 4:48 PM CDTSevere Thunderstorm WarningMPXBrown, Redwood62 min
Jun 27, 5:00 PM CDTSevere Thunderstorm WarningMPXMartin65 min
Jun 27, 5:30 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Faribault65 min
Jun 27, 5:36 PM CDTTornado WarningMPXFaribault, Martin34 min
Jun 27, 5:50 PM CDTSevere Thunderstorm WarningMPXCarver, Scott, Sibley65 min
Jun 27, 5:56 PM CDTSevere Thunderstorm WarningMPXFreeborn, Steele, Waseca64 min
Jun 27, 6:01 PM CDTTornado WarningMPXFaribault, Freeborn, Waseca34 min
Jun 27, 6:07 PM CDTTornado WarningMPXNicollet, Sibley48 min
Jun 27, 6:17 PM CDTTornado WarningMPXLe Sueur48 min
Jun 27, 6:22 PM CDTTornado WarningMPXFreeborn33 min
Jun 27, 6:26 PM CDTTornado WarningMPXDakota, Rice54 min
Jun 27, 6:46 PM CDTTornado WarningMPXSteele29 min
Jun 27, 6:57 PM CDTTornado WarningMPXFreeborn33 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1998Every severe thunderstorm warning in 1998

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.