Alert archive / Minnesota / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 702

August 29, 200118 counties in Minnesota

The Storm Prediction Center issued this severe thunderstorm watch at Aug 29, 2001, 7:30 PM CDT for 18 counties in Minnesota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Aug 29, 2001, 7:30 PM CDT (00:30 UTC)
Expired
Aug 30, 2001, 12:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center

Counties Anoka County, MN, Benton County, MN, Carver County, MN, Crow Wing County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Renville County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 69 km from the middle of the area, began a volume at 00:32 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

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

IssuedProductOfficeCountiesLasted
Aug 29, 7:46 PM CDTSevere Thunderstorm WarningMPXPope, Stearns44 min
Aug 29, 7:58 PM CDTSevere Thunderstorm WarningDLHCrow Wing62 min
Aug 29, 8:29 PM CDTSevere Thunderstorm WarningMPXStearns46 min
Aug 29, 9:12 PM CDTSevere Thunderstorm WarningDLHPine63 min
Aug 29, 11:02 PM CDTSevere Thunderstorm WarningMPXAnoka, Sherburne43 min

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 67 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 2001-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1904 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 2001-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 390 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
1904 J/kg
Mixed-layer CIN
-172 J/kg
Mixed-layer LCL
1004 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
390 m²/s²
0-3 km storm-relative helicity
463 m²/s²
Significant tornado parameter
0.7
Supercell composite
13.8

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.

Nearby

Severe Thunderstorm Watches in Minnesota, 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; radar from the NEXRAD Level II archive.