Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 145, NWS Twin Cities, MN

July 7, 2008Benton County, Sherburne County, Stearns County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 7, 2008, 5:52 PM CDT for Benton County, Sherburne County, Stearns County, Minnesota. It was in force for 38 min. 2 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 7, 2008, 5:52 PM CDT (22:52 UTC)
Expired
Jul 7, 2008, 6:30 PM CDT
In force
38 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Benton County, MN, Sherburne County, MN, Stearns County, MN

The radar

The Minneapolis radar (KMPX), 98 km from the middle of the area, began a volume at 23:04 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
Jul 7, 6:03 PM CDTTSTM WND DMG4 Nnw Sauk Rapids, MNAWNINGS BLOWN OFF A DECK IN THE NORTHERN PART OF SARTELL NEAR THE GRADE SCHOOL.
Jul 7, 6:28 PM CDTTSTM WND DMG2 W Foley, MN3 INCH DIAMETER TREE LIMBS DOWNED

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

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.9 hours before the alert went out and 97 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 12:00Z on 2008-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 12:00Z on 2008-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 square meters per square second.193958Sfc1 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
1467 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
21 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 072252
SVRMPX
MNC009-141-145-072330-
/O.NEW.KMPX.SV.W.0145.080707T2252Z-080707T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
552 PM CDT MON JUL 7 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN STEARNS COUNTY IN CENTRAL MINNESOTA...
  NORTHWESTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA...
  BENTON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 630 PM CDT

* AT 550 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING PENNY SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 3
  MILES NORTHEAST OF RICE TO 4 MILES SOUTH OF AVON...AND MOVING EAST
  AT 39 MPH.

* SOME LOCATIONS INCLUDE...
  ST JOSEPH...
  SARTELL...
  ROCKVILLE...
  PLEASANT LAKE...
  SAUK RAPIDS...
  MAYHEW...
  WAITE PARK...
  GILMAN...
  LUXEMBURG...
  ST CLOUD...
  ST AUGUSTA...
  FOLEY...

POWER LINES WERE ALSO REPORTED DOWN IN ALBANY AT 548 PM.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

LAT...LON 4575 9377 4537 9416 4552 9466 4581 9421
TIME...MOT...LOC 2252Z 281DEG 34KT 4578 9417 4555 9444

$$
2 follow-up statements
000 
WWUS53 KMPX 072309
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
607 PM CDT MON JUL 7 2008

MNC009-141-145-072330-
/O.CON.KMPX.SV.W.0145.000000T0000Z-080707T2330Z/
STEARNS MN-SHERBURNE MN-BENTON MN-
607 PM CDT MON JUL 7 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM CDT
FOR BENTON...NORTHWESTERN SHERBURNE AND EASTERN STEARNS COUNTIES...

AT 603 PM CDT...AWNINGS WERE REPORTED BLOWN OFF A DECK 4 MILES 
NORTH...NORTHWEST OF SAUK RAPIDS.

AT 604 PM CDT...RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING PENNY SIZE HAIL AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE SEVERE STORMS WERE LOCATED ALONG A
LINE EXTENDING FROM 5 MILES NORTHWEST OF GILMAN TO PLEASANT LAKE...
AND MOVING EAST AT 39 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE ST AUGUSTA...PARENT...
MAYHEW...LUXEMBURG...FARMING...COLLEGEVILLE...WAITE PARK...ST
STEPHEN...ST JOSEPH AND ST CLOUD.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE ACROSS THE NORTH 
AND EAST PARTS OF STEARNS COUNTY.

LAT...LON 4575 9377 4537 9416 4552 9466 4581 9421
TIME...MOT...LOC 2307Z 281DEG 34KT 4576 9400 4549 9421

$$
000 
WWUS53 KMPX 072331
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
629 PM CDT MON JUL 7 2008

MNC009-141-145-072339-
/O.EXP.KMPX.SV.W.0145.000000T0000Z-080707T2330Z/
STEARNS MN-SHERBURNE MN-BENTON MN-
629 PM CDT MON JUL 7 2008

...THE SEVERE THUNDERSTORM WARNING FOR BENTON...NORTHWESTERN
SHERBURNE AND EASTERN STEARNS COUNTIES EXPIRES AT 630 PM CDT...

AT 603 PM...A TWENTY FOOT PINE TREE WAS REPORTED TOPPLED IN THE CITY
OF SARTELL. THE STORMS HAVE MOVED OUT OF THE WARNED AREA. LIGHT SHOWER
ACTIVITY WAS OBSERVED JUST BEHIND THIS LINE OF STRONG THUNDERSTORMS
MOVING EAST SOUTHEAST AT 35 MPH. 

LAT...LON 4575 9377 4537 9416 4552 9466 4581 9421
TIME...MOT...LOC 2329Z 281DEG 34KT 4572 9371 4545 9392

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 1:41 PM CDTSevere Thunderstorm WarningMPXFreeborn34 min
Jul 7, 5:09 PM CDTSevere Thunderstorm WarningMPXStearns, Todd36 min
Jul 7, 6:15 PM CDTSevere Thunderstorm WarningMPXMille Lacs, Morrison27 min
Jul 7, 6:38 PM CDTSevere Thunderstorm WarningMPXAnoka, Benton, Isanti, Mille Lacs, Sherburne48 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2008Every severe thunderstorm warning in 2008

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.