Alert archive / Minnesota / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 231

May 15, 200114 counties in Minnesota; 5 counties in North Dakota

The Storm Prediction Center issued this severe thunderstorm watch at May 15, 2001, 2:30 PM CDT for 14 counties in Minnesota; 5 counties in North Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 15, 2001, 2:30 PM CDT (19:30 UTC)
Expired
May 15, 2001, 8:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center

Counties Becker County, MN, Beltrami County, MN, Clay County, MN, Clearwater County, MN, Hubbard County, MN, Kittson County, MN, Lake of the Woods County, MN, Mahnomen County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Roseau County, MN, Cass County, ND, Grand Forks County, ND, Pembina County, ND, Traill County, ND, Walsh County, ND

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 15, 2:30 PM CDTSevere Thunderstorm WarningFGFGrand Forks45 min
May 15, 3:03 PM CDTSevere Thunderstorm WarningFGFPolk57 min
May 15, 3:44 PM CDTSevere Thunderstorm WarningFGFPennington36 min
May 15, 3:46 PM CDTSevere Thunderstorm WarningFGFBecker44 min
May 15, 3:50 PM CDTTornado WarningFGFPennington, Red Lake30 min
May 15, 4:12 PM CDTSevere Thunderstorm WarningFGFPolk33 min
May 15, 4:21 PM CDTTornado WarningFGFPennington, Red Lake24 min
May 15, 4:32 PM CDTSevere Thunderstorm WarningFGFBecker28 min
May 15, 4:46 PM CDTSevere Thunderstorm WarningFGFHubbard29 min
May 15, 4:47 PM CDTTornado WarningFGFBeltrami, Clearwater28 min
May 15, 4:47 PM CDTTornado WarningFGFPolk28 min
May 15, 5:11 PM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater, Hubbard49 min
May 15, 5:30 PM CDTTornado WarningFGFBeltrami30 min
May 15, 5:36 PM CDTSevere Thunderstorm WarningFGFRoseau24 min
May 15, 5:45 PM CDTSevere Thunderstorm WarningFGFLake of the Woods45 min
May 15, 6:01 PM CDTSevere Thunderstorm WarningFGFBeltrami19 min

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 7.5 hours before the alert went out and 183 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 2001-05-15Temperature 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 2001-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.193958Sfc1 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
580 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
146 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.6

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 15, 5:30 PM CDTSevere Thunderstorm WatchSPCAitkin, Anoka, Benton, Carlton, Carver, Cass and 17 more6 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2001Severe Thunderstorm Watches in North Dakota, 2001Every severe thunderstorm watch in 2001

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.