Alert archive / Minnesota / Severe Thunderstorm Watches in 1998

Severe Thunderstorm Watch 342

May 14, 19989 counties in Minnesota

The Storm Prediction Center issued this severe thunderstorm watch at May 14, 1998, 7:00 AM CDT for 9 counties in Minnesota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 14, 1998, 7:00 AM CDT (12:00 UTC)
Expired
May 14, 1998, 1:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Beltrami County, MN, Cass County, MN, Cook County, MN, Hubbard County, MN, Itasca County, MN, Koochiching County, MN, Lake County, MN, Lake of the Woods County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 165 km from the middle of the area, began a volume at 12:00 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.

Warnings issued inside it

1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 14, 7:22 AM CDTSevere Thunderstorm WarningDLHLake63 min

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 0.0 hours before the alert went out and 45 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, International Fa, MN at 12:00Z on 1998-05-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, International Fa, MN at 12:00Z on 1998-05-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 431 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
431 m²/s²
0-3 km storm-relative helicity
420 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 14, 5:15 PM CDTTornado WatchSPCClay, Kittson, Marshall, Norman, Pennington, Polk and 1 more6 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 1998Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.