Alert archive / Minnesota / Tornado Watches in 2006

Tornado Watch 658

July 30, 200618 counties in Minnesota; 13 counties in Wisconsin

The Storm Prediction Center issued this tornado watch at Jul 30, 2006, 12:54 AM CDT for 18 counties in Minnesota; 13 counties in Wisconsin. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 30, 2006, 12:54 AM CDT (05:54 UTC)
Expired
Jul 30, 2006, 6:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
70 kt
All 31 counties

Aitkin County, MN, Anoka County, MN, Benton County, MN, Carlton County, MN, Cass County, MN, Chisago County, MN, Cook County, MN, Crow Wing County, MN, Isanti County, MN, Itasca County, MN, Kanabec County, MN, Koochiching County, MN, Lake County, MN, Mille Lacs County, MN, Morrison County, MN, Pine County, MN, Saint Louis County, MN, Sherburne County, MN, Ashland County, WI, Barron County, WI, Bayfield County, WI, Burnett County, WI, Douglas County, WI, Iron County, WI, Oneida County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Sawyer County, WI, Vilas County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 67 km from the middle of the area, began a volume at 05:56 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 SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
50%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
60%
One or more gusts of 65 knots or more
60%
Ten or more severe hail reports
60%
One or more hailstones of 2 inches or more
60%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 30, 12:55 AM CDTTornado WarningDLHBayfield35 min
Jul 30, 1:07 AM CDTSevere Thunderstorm WarningDLHAitkin, Crow Wing53 min
Jul 30, 1:17 AM CDTSevere Thunderstorm WarningDLHCass13 min
Jul 30, 1:17 AM CDTSevere Thunderstorm WarningDLHDouglas28 min
Jul 30, 1:21 AM CDTSevere Thunderstorm WarningDLHSaint Louis54 min
Jul 30, 1:27 AM CDTTornado WarningDLHBayfield48 min
Jul 30, 1:28 AM CDTSevere Thunderstorm WarningDLHCass32 min
Jul 30, 1:43 AM CDTSevere Thunderstorm WarningDLHDouglas8 min
Jul 30, 1:55 AM CDTSevere Thunderstorm WarningDLHAitkin, Itasca50 min
Jul 30, 1:56 AM CDTSevere Thunderstorm WarningDLHAshland49 min
Jul 30, 2:00 AM CDTTornado WarningDLHAitkin, Cass, Crow Wing30 min
Jul 30, 2:09 AM CDTSevere Thunderstorm WarningDLHAshland51 min
Jul 30, 2:11 AM CDTSevere Thunderstorm WarningDLHSaint Louis34 min
Jul 30, 2:14 AM CDTSevere Thunderstorm WarningDLHBayfield56 min
Jul 30, 2:29 AM CDTSevere Thunderstorm WarningDLHAitkin61 min
Jul 30, 2:40 AM CDTSevere Thunderstorm WarningDLHSawyer65 min
Jul 30, 2:43 AM CDTSevere Thunderstorm WarningDLHSaint Louis62 min
Jul 30, 2:44 AM CDTSevere Thunderstorm WarningDLHCass, Itasca61 min
Jul 30, 2:45 AM CDTSevere Thunderstorm WarningDLHCarlton, Pine60 min
Jul 30, 2:57 AM CDTSevere Thunderstorm WarningDLHAshland29 min
Jul 30, 3:13 AM CDTSevere Thunderstorm WarningDLHPrice47 min
Jul 30, 3:14 AM CDTSevere Thunderstorm WarningMPXRusk61 min
Jul 30, 3:40 AM CDTSevere Thunderstorm WarningDLHSawyer35 min
Jul 30, 3:43 AM CDTSevere Thunderstorm WarningDLHSaint Louis32 min
Jul 30, 3:45 AM CDTSevere Thunderstorm WarningDLHPine60 min
Jul 30, 3:50 AM CDTSevere Thunderstorm WarningDLHCarlton55 min
Jul 30, 3:55 AM CDTSevere Thunderstorm WarningDLHPrice50 min
Jul 30, 3:56 AM CDTSevere Thunderstorm WarningDLHItasca49 min
Jul 30, 3:56 AM CDTSevere Thunderstorm WarningDLHItasca49 min
Jul 30, 4:12 AM CDTSevere Thunderstorm WarningMPXRusk48 min
Jul 30, 4:15 AM CDTSevere Thunderstorm WarningDLHWashburn30 min
Jul 30, 4:36 AM CDTSevere Thunderstorm WarningDLHSaint Louis54 min
Jul 30, 4:43 AM CDTSevere Thunderstorm WarningDLHCarlton, Pine46 min
Jul 30, 4:45 AM CDTSevere Thunderstorm WarningDLHBurnett, Sawyer, Washburn60 min
Jul 30, 4:54 AM CDTSevere Thunderstorm WarningMPXBarron81 min
Jul 30, 5:02 AM CDTSevere Thunderstorm WarningMPXPolk58 min
Jul 30, 5:11 AM CDTSevere Thunderstorm WarningMPXRusk79 min
Jul 30, 5:44 AM CDTSevere Thunderstorm WarningDLHPrice, Sawyer61 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 5.9 hours before the alert went out and 177 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 00:00Z on 2006-07-30Temperature 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 00:00Z on 2006-07-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
1708 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 29, 7:22 PM CDTMesoscale DiscussionSPCBecker, Big Stone, Clay, Douglas, Grant, Hubbard and 10 more113 min
Jul 29, 9:24 PM CDTMesoscale DiscussionSPCBecker, Cass, Clay, Crow Wing, Hubbard, Mahnomen and 5 more96 min
Jul 30, 3:17 AM CDTMesoscale DiscussionSPCAitkin, Beltrami, Benton, Carlton, Cass, Chisago and 11 more58 min
Jul 30, 5:17 AM CDTMesoscale DiscussionSPCAitkin, Carlton, Cass, Chisago, Crow Wing, Isanti and 6 more58 min
Jul 30, 4:10 AM CDTSevere Thunderstorm WatchSPCAdams, Buffalo, Chippewa, Clark, Columbia, Crawford and 35 more5 hr
Jul 30, 7:00 AM CDTMesoscale DiscussionSPCAdams, Chippewa, Clark, Columbia, Dane, Dodge and 24 more90 min
Jul 30, 8:27 AM CDTSevere Thunderstorm WatchSPCDodge, Jefferson, Kenosha, Milwaukee, Ozaukee, Racine and 3 more7 hr

Nearby

Tornado Watches in Minnesota, 2006Tornado Watches in Wisconsin, 2006Every tornado watch in 2006

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.