Alert archive / Minnesota / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 259, NWS Twin Cities, MN

August 8, 2005Dakota County, Hennepin County, Ramsey County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 8, 2005, 5:50 AM CDT for Dakota County, Hennepin County, Ramsey County, Minnesota. It was in force for 56 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
Aug 8, 2005, 5:50 AM CDT (10:50 UTC)
Expired
Aug 8, 2005, 6:46 AM CDT
In force
56 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Dakota County, MN, Hennepin County, MN, Ramsey County, MN

The radar

The Minneapolis radar (KMPX), 29 km from the middle of the area, began a volume at 10:51 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 watch it was issued in

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

IssuedProductOfficeLasted
Aug 8, 5:25 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 10.8 hours before the alert went out and 32 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 2005-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3207 joules per kilogram.LCLLFCEL10008507005003002001001 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 2005-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.1939Sfc1 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
3207 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
1389 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.9
Supercell composite
7.8

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KMPX 081050
SVRMPX
MNC037-053-123-081145-
/O.NEW.KMPX.SV.W.0259.050808T1050Z-050808T1145Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
550 AM CDT MON AUG 8 2005

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA
  RAMSEY COUNTY IN EAST CENTRAL MINNESOTA
  DAKOTA COUNTY IN EAST CENTRAL MINNESOTA

* UNTIL 645 AM CDT

* AT 547 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM...
  CAPABLE OF PRODUCING LARGE HAIL. THIS STORM WAS LOCATED NEAR
  MINNEAPOLIS...AND MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ROSEVILLE...
  EAGAN...
  ST PAUL...
  MAPLEWOOD...

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 4504 9332 4484 9336 4463 9303 4498 9299

$$
2 follow-up statements
000 
WWUS53 KMPX 081122
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
622 AM CDT MON AUG 8 2005

MNC037-053-123-081145-
/O.CON.KMPX.SV.W.0259.000000T0000Z-050808T1145Z/
HENNEPIN MN-RAMSEY MN-DAKOTA MN-
622 AM CDT MON AUG 8 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 645 AM CDT FOR
DAKOTA...RAMSEY AND HENNEPIN COUNTIES...

AT 621 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM...CAPABLE OF PRODUCING LARGE HAIL...AND THIS STORM WAS
LOCATED NEAR LAUDERDALE...OR ABOUT OVER MINNEAPOLIS...AND MOVING
SOUTHEAST AT 20 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE SUNFISH...MENDOTA...
LILYDALE...WEST ST PAUL...ST PAUL...SOUTH ST PAUL...ROSEMOUNT...
RICHFIELD...MINNEAPOLIS...MENDOTA HEIGHTS...MAPLEWOOD...INVER GROVE
HEIGHTS...FALCON HEIGHTS...EAGAN...BLOOMINGTON AND APPLE VALLEY.

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 4504 9332 4484 9336 4463 9303 4498 9299

$$
000 
WWUS53 KMPX 081146
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
644 AM CDT MON AUG 8 2005

MNC037-053-123-081157-
/O.EXP.KMPX.SV.W.0259.000000T0000Z-050808T1145Z/
HENNEPIN MN-RAMSEY MN-DAKOTA MN-
644 AM CDT MON AUG 8 2005

...THE SEVERE THUNDERSTORM WARNING FOR DAKOTA...RAMSEY AND HENNEPIN 
COUNTIES EXPIRED AT 645 AM CDT...

THUNDERSTORMS OVER HENNEPIN...RAMSEY AND DAKOTA COUNTY...HAVE 
DECREASED BELOW SEVERE LEVELS.  THERE THE SEVERE THUNDERSTORM 
WARNING WAS ALLOWED TO EXPIRE.

STRONG THUNDERSTORMS REMAIN OVER DAKOTA COUNTY...AND COULD STILL 
CONTAIN MARBLE SIZE HAIL...WIND GUSTS TO 40 MPH AND HEAVY RAIN AS 
THEY MOVE THROUGH. 

LAT...LON 4504 9332 4484 9336 4463 9303 4498 9299

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 4:19 AM CDTSevere Thunderstorm WarningMPXDakota, Washington56 min
Aug 8, 5:04 AM CDTSevere Thunderstorm WarningMPXCarver, Wright56 min
Aug 8, 6:06 AM CDTSevere Thunderstorm WarningMPXNicollet19 min
Aug 8, 6:10 AM CDTSevere Thunderstorm WarningMPXWashington50 min
Aug 8, 6:31 AM CDTSevere Thunderstorm WarningMPXMcLeod, Renville39 min
Aug 8, 8:30 AM CDTSevere Thunderstorm WarningMPXMcLeod, Renville39 min
Aug 8, 5:54 PM CDTSevere Thunderstorm WarningMPXLac qui Parle66 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2005Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.