Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 23, NWS Twin Cities, MN

June 22, 1997Nicollet County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 22, 1997, 9:06 PM CDT for Nicollet County, Minnesota. It was in force for 59 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
Jun 22, 1997, 9:06 PM CDT (02:06 UTC)
Expired
Jun 22, 1997, 10:05 PM CDT
In force
59 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 77 km from the middle of the area, began a volume at 02:07 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

Minneapolis, MN (KMPX), launched 00:00Z, 2.1 hours before the alert went out and 76 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 1997-06-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1565 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 1997-06-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
1565 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1227 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
388 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.3

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 22, 7:15 PM CDTSevere Thunderstorm WarningMPXBrown60 min
Jun 22, 8:06 PM CDTSevere Thunderstorm WarningMPXWatonwan49 min
Jun 22, 8:17 PM CDTTornado WarningMPXWatonwan48 min
Jun 22, 8:44 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Faribault61 min
Jun 22, 8:56 PM CDTSevere Thunderstorm WarningMPXMartin34 min
Jun 22, 9:06 PM CDTSevere Thunderstorm WarningMPXNicollet44 min
Jun 22, 11:51 PM CDTSevere Thunderstorm WarningMPXDouglas69 min
Jun 23, 12:47 AM CDTSevere Thunderstorm WarningMPXTodd63 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1997Every severe thunderstorm warning in 1997

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.