Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 154, NWS Twin Cities, MN

June 16, 1998Anoka County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 16, 1998, 5:51 PM CDT for Anoka County, Minnesota. It was in force for 34 min. 1 report 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 16, 1998, 5:51 PM CDT (22:51 UTC)
Expired
Jun 16, 1998, 6:25 PM CDT
In force
34 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Anoka County, MN

The radar

The Minneapolis radar (KMPX), 53 km from the middle of the area, began a volume at 22:51 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 16, 6:00 PM CDTHail 0.75Circle Pines, MN

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

Minneapolis, MN (KMPX), launched 12:00Z, 10.9 hours before the alert went out and 55 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 1998-06-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 147 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 1998-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.1939Sfc1 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
147 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
1150 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
99 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.

830 
WUUS1 KMSP 162254 RRA
SVRMSP
MNC003-162325-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
551 PM CDT TUE JUN 16 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  ANOKA COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 625 PM CDT

* AT 551 PM CDT...DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
  HAIL NEAR SODERVILLE...OR ABOUT 20 MILES TO THE NORTH OF ST PAUL.
  THE STORM WAS DRIFTING SLOWLY EAST.

* SOME LOCATIONS AFFECTED
    CENTERVILLE
    SODERVILLE
    CIRCLE PINES

THIS IS A DANGEROUS STORM...WITH LARGE HAIL.  STAY INDOORS AWAY
FROM WINDOWS.


TIPTON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 8:12 PM CDTSevere Thunderstorm WarningMPXWashington48 min
Jun 15, 9:03 PM CDTSevere Thunderstorm WarningMPXChisago, Isanti47 min
Jun 16, 4:07 PM CDTSevere Thunderstorm WarningMPXRamsey33 min
Jun 16, 4:18 PM CDTTornado WarningMPXFreeborn32 min
Jun 16, 5:39 PM CDTSevere Thunderstorm WarningMPXRamsey31 min
Jun 16, 6:22 PM CDTSevere Thunderstorm WarningMPXScott33 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.