Alert archive / Minnesota / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 162, NWS Twin Cities, MN

August 23, 2006Chisago County, Isanti County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 23, 2006, 2:40 AM CDT for Chisago County, Isanti County, Minnesota. It was in force for 50 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 23, 2006, 2:40 AM CDT (07:40 UTC)
Expired
Aug 23, 2006, 3:30 AM CDT
In force
50 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Chisago County, MN, Isanti County, MN

The radar

The Minneapolis radar (KMPX), 90 km from the middle of the area, began a volume at 07:42 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 was reported inside it

TimeReportWhereRemark
Aug 23, 3:00 AM CDTHAIL 0.88North Branch, MN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 22, 10:16 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 7.7 hours before the alert went out and 91 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 2006-08-23Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2006-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
1984 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
149 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 230740
SVRMPX
MNC025-059-230830-
/O.NEW.KMPX.SV.W.0162.060823T0740Z-060823T0830Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
240 AM CDT WED AUG 23 2006

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
  CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 330 AM CDT

* AT 231 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS.  THIS STORM WAS
  LOCATED 12 MILES SOUTHWEST OF NORTH BRANCH...OR ABOUT 10 MILES
  SOUTH OF CAMBRIDGE...AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  NORTH BRANCH...
  BRANCH...
  HARRIS...
  RUSH CITY...

STAY INDOORS...AND AWAY FROM WINDOWS.

LAT...LON 4567 9315 4541 9320 4541 9280 4568 9290

$$
1 follow-up statement
000 
WWUS53 KMPX 230802
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
259 AM CDT WED AUG 23 2006

MNC025-059-230830-
/O.CON.KMPX.SV.W.0162.000000T0000Z-060823T0830Z/
ISANTI MN-CHISAGO MN-
259 AM CDT WED AUG 23 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM CDT
FOR CHISAGO AND ISANTI COUNTIES...

AT 258 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. 
THIS STORM WAS LOCATED NEAR BRANCH...OR ABOUT 13 MILES EAST OF 
CAMBRIDGE...AND MOVING NORTHEAST AT 25 MPH. DOPPLER RADAR ALSO 
INDICATED A LINE OF SEVERE STORMS OVER WESTERN ISANTI COUNTY FROM 
NEAR DALBO TO CROWN. THESE STORMS ARE MOVING EAST SOUTHEAST AT 45 
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE CAMBRIDGE...STANCHFIELD AND 
BRADFORD. 

LAT...LON 4572 9346 4547 9351 4542 9314 4541 9280
      4568 9290

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 23, 2:07 AM CDTSevere Thunderstorm WarningMPXStearns38 min
Aug 23, 2:32 AM CDTSevere Thunderstorm WarningMPXBenton, Sherburne, Wright58 min
Aug 23, 2:46 AM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Swift59 min
Aug 23, 3:09 AM CDTSevere Thunderstorm WarningMPXAnoka36 min
Aug 23, 3:25 AM CDTSevere Thunderstorm WarningMPXChisago35 min
Aug 23, 4:13 AM CDTSevere Thunderstorm WarningMPXKandiyohi, Renville23 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2006Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.