Alert archive / Minnesota / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 152, NWS Twin Cities, MN

July 31, 2006Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 31, 2006, 7:02 PM CDT for Morrison County, Minnesota. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 31, 2006, 7:02 PM CDT (00:02 UTC)
Expired: Jul 31, 2006, 7:45 PM CDT
In force: 43 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Morrison County, MN

The radar

The Minneapolis radar (KMPX), 165 km from the middle of the area, began a volume at 00:03 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, 0.0 hours before the alert went out and 164 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 4090 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1499 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 166 m²/s²
0-3 km storm-relative helicity: 293 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KMPX 010002
SVRMPX
MNC097-010045-
/O.NEW.KMPX.SV.W.0152.060801T0002Z-060801T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
702 PM CDT MON JUL 31 2006

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MORRISON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 745 PM CDT

* AT 658 PM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 65
  MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 10
  MILES NORTHEAST OF RANDALL TO 8 MILES WEST OF RANDALL...AND MOVING
  NORTHEAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RANDALL...
  CUSHING...
  FORT RIPLEY...

LAT...LON 4629 9464 4605 9464 4609 9442 4616 9418
      4617 9438 4629 9438

$$
KAT

2 follow-up statements

000 
WWUS53 KMPX 010028
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
728 PM CDT MON JUL 31 2006

MNC097-010045-
/O.CON.KMPX.SV.W.0152.000000T0000Z-060801T0045Z/
MORRISON MN-
728 PM CDT MON JUL 31 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM CDT
FOR MORRISON COUNTY...

AT 725 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE 
THUNDERSTORM...CAPABLE OF PRODUCING PENNY SIZE HAIL AND 65 MPH 
WINDS.  THIS STORM WAS LOCATED 8 MILES NORTHWEST OF UPSALA...OR 
ABOUT 11 MILES SOUTHEAST OF LONG PRAIRIE...AND MOVING NORTHEAST AT 30
MPH. THE STORM IN NORTHERN MORRISON COUNTY THAT PROMPTED THE 
ORIGINAL WARNING HAS MOVED OUT OF THE COUNTY...AND IS NO LONGER A 
THREAT.

OTHER LOCATIONS IN THE WARNING INCLUDE LITTLE FALLS.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

LAT...LON 4599 9463 4579 9464 4578 9437 4614 9435

$$

KAT

000 
WWUS53 KMPX 010047
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
745 PM CDT MON JUL 31 2006

MNC097-010055-
/O.EXP.KMPX.SV.W.0152.000000T0000Z-060801T0045Z/
MORRISON MN-
745 PM CDT MON JUL 31 2006

...THE SEVERE THUNDERSTORM WARNING FOR MORRISON COUNTY EXPIRES AT 745
PM CDT...

STRONG STORMS REMAIN ACROSS THE WESTERN PORTION OF MORRISON 
COUNTY...BUT AT THIS TIME...THEY HAVE DECREASED BENEATH SEVERE 
LEVELS. WINDS TO 50 MPH AND PEA SIZED HAIL WILL BE POSSIBLE ACROSS 
LOCATIONS FROM RANDALL...TO LITTLE FALLS...AND FLENSBURG. REMAIN 
ALERT FOR POSSIBLE ADDITIONAL WARNINGS...IN THE EVENT THAT THE 
STORMS RESTRENGTHEN.

LAT...LON 4599 9463 4579 9464 4578 9437 4614 9435

$$

KAT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 31, 7:30 PM CDT	Severe Thunderstorm Warning	MPX	Todd	19 min
Jul 31, 10:57 PM CDT	Severe Thunderstorm Warning	MPX	Sherburne, Wright	35 min
Aug 1, 3:47 AM CDT	Flash Flood Watch	MPX	Anoka, Blue Earth, Brown, Carver, Chisago, Dakota and 15 more	24 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2006 Every severe thunderstorm warning 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.