Alert archive / Minnesota / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 239, NWS Twin Cities, MN

July 23, 2005Chisago County, Ramsey County, Washington County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 23, 2005, 10:39 AM CDT for Chisago County, Ramsey County, Washington County, Minnesota. It was in force for 53 min. 12 reports 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: Jul 23, 2005, 10:39 AM CDT (15:39 UTC)
Expired: Jul 23, 2005, 11:32 AM CDT
In force: 53 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

Counties Chisago County, MN, Ramsey County, MN, Washington County, MN

The radar

The Minneapolis radar (KMPX), 73 km from the middle of the area, began a volume at 15:39 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

Time	Report	Where	Remark
Jul 23, 10:47 AM CDT	TSTM WND DMG	Little Canada, MN	TREES DOWN.
Jul 23, 10:47 AM CDT	TSTM WND DMG	St Paul, MN	TREES DOWN.
Jul 23, 10:50 AM CDT	TSTM WND DMG	North St Paul, MN	EXTERIOR LIGHTS BLOWN OFF HOME...5 INCH DIAMETER TREE BRANCHES DOWN.
Jul 23, 11:00 AM CDT	TSTM WND DMG	Hugo, MN	SMALL TREE DOWN
Jul 23, 11:00 AM CDT	TSTM WND DMG	Lindstrom, MN	POWER LINES DOWN
Jul 23, 11:00 AM CDT	TSTM WND DMG	Maplewood, MN	TREES DOWN
Jul 23, 11:00 AM CDT	TSTM WND DMG	Stillwater, MN	TREES DOWN COUNTYWIDE
Jul 23, 11:00 AM CDT	TSTM WND DMG	White Bear Lake, MN	SEVERAL LARGE TREES OVER ONE FOOT IN DIAMETER DOWNED.
Jul 23, 11:15 AM CDT	TSTM WND DMG	Hugo, MN	SMALL TREE DOWN
Jul 23, 11:15 AM CDT	TSTM WND DMG	Hugo, MN	SMALL TREE DOWN
Jul 23, 11:15 AM CDT	TSTM WND DMG	Stillwater, MN	TREES DOWN COUNTYWIDE
Jul 23, 11:15 AM CDT	TSTM WND DMG	White Bear Lake, MN	6 INCH DIAMETER TREE DOWN

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.

Issued	Product	Office	Lasted
Jul 23, 7:15 AM CDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 23, 10:15 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 3.7 hours before the alert went out and 75 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: 883 J/kg
Mixed-layer CIN: -215 J/kg
Mixed-layer LCL: 1174 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 231540
SVRMPX
MNC025-123-163-231645-
/O.NEW.KMPX.SV.W.0239.050723T1539Z-050723T1645Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1039 AM CDT SAT JUL 23 2005

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 1145 AM CDT

* AT 1034 AM CDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
  THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 50 MILES
  NORTHWEST OF STILLWATER TO THE NORTHWEST PART OF MINNEAPOLIS...AND 
  MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ST PAUL...
  MAPLEWOOD...
  STILLWATER...
  CHISAGO CITY...
  TAYLORS FALLS...

THIS IS A DANGEROUS STORM THAT HAS A HISTORY OF PRODUCING DAMAGING WINDS. 
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 4573 9312 4524 9292 4493 9317 4493 9281
      4525 9279 4571 9291

$$

KAT

2 follow-up statements

000 
WWUS53 KMPX 231617
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1116 AM CDT SAT JUL 23 2005

MNC123-231626-
/O.CAN.KMPX.SV.W.0239.000000T0000Z-050723T1645Z/
RAMSEY MN-
1116 AM CDT SAT JUL 23 2005

...THE SEVERE THUNDERSTORM WARNING FOR RAMSEY COUNTY IS CANCELLED...

THE STORMS THAT PROMPTED THE WARNING FOR RAMSEY COUNTY HAVE MOVED 
EAST OF THE WARNED AREA. THEREFORE...THE SEVERE THUNDERSTORM WARNING 
WILL BE ALLOWED TO EXPIRE.

LAT...LON 4554 9295 4524 9292 4492 9296 4491 9278
      4525 9279 4554 9274

$$

MNC025-163-231645-
/O.CON.KMPX.SV.W.0239.000000T0000Z-050723T1645Z/
CHISAGO MN-WASHINGTON MN-
1116 AM CDT SAT JUL 23 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 1145 AM CDT FOR
WASHINGTON AND CHISAGO COUNTIES...

AT 1100 AM CDT...NUMEROUS POWER LINES WERE REPORTED DOWNED NEAR 
WYOMING WITH THIS STORM. THIS IS A DANGEROUS STORM...SEEK SAFE 
SHELTER AND STAY AWAY FROM WINDOWS

AT 1113 AM CDT...THESE STORMS WERE LOCATED ALONG A LINE EXTENDING 
FROM 7 MILES SOUTHEAST OF AMERY TO RIVER FALLS...MOVING EAST AT 50 
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE OAK PARK HEIGHTS...
STILLWATER...LINDSTROM...LAKE ELMO...CHISAGO CITY AND CENTER CITY.

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 4554 9295 4524 9292 4492 9296 4491 9278
      4525 9279 4554 9274

$$

KAT

000 
WWUS53 KMPX 231632
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1131 AM CDT SAT JUL 23 2005

MNC025-163-231641-
/O.CAN.KMPX.SV.W.0239.000000T0000Z-050723T1645Z/
CHISAGO MN-WASHINGTON MN-
1131 AM CDT SAT JUL 23 2005

...THE SEVERE THUNDERSTORM WARNING FOR WASHINGTON AND CHISAGO
COUNTIES IS CANCELLED...

RADAR INDICATED THAT THE SEVERE THUNDERSTORM HAD MOVED OUT OF THE
WARNED AREA. THUS THE WARNING HAS BEEN CANCELLED.

LAT...LON 4554 9295 4524 9292 4492 9296 4491 9278
      4525 9279 4554 9274

$$

KAT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 3:33 AM CDT	Heat Advisory	MPX	Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 30 more	15 hr
Jul 23, 7:59 AM CDT	Severe Thunderstorm Warning	MPX	Stevens, Swift	46 min
Jul 23, 8:22 AM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope	53 min
Jul 23, 8:45 AM CDT	Severe Thunderstorm Warning	MPX	Stevens, Swift	60 min
Jul 23, 8:54 AM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Stearns, Todd	66 min
Jul 23, 9:13 AM CDT	Severe Thunderstorm Warning	MPX	Pope	47 min
Jul 23, 9:29 AM CDT	Severe Thunderstorm Warning	MPX	Meeker	61 min
Jul 23, 9:41 AM CDT	Severe Thunderstorm Warning	MPX	Benton, Sherburne	64 min
Jul 23, 9:46 AM CDT	Severe Thunderstorm Warning	MPX	Wright	59 min
Jul 23, 10:06 AM CDT	Severe Thunderstorm Warning	MPX	Isanti, Kanabec, Mille Lacs	54 min
Jul 23, 10:12 AM CDT	Severe Thunderstorm Warning	MPX	Hennepin	63 min
Jul 23, 10:19 AM CDT	Severe Thunderstorm Warning	MPX	Anoka	56 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2005 Every severe thunderstorm warning in 2005

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.