Alert archive / Minnesota / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 63, NWS Twin Cities, MN

June 25, 2010Dakota County, Hennepin County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 25, 2010, 6:51 PM CDT for Dakota County, Hennepin County, Minnesota. It was in force for 24 min. 3 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: Jun 25, 2010, 6:51 PM CDT (23:51 UTC)
Expired: Jun 25, 2010, 7:15 PM CDT
In force: 24 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 65.0 mph

Counties Dakota County, MN, Hennepin County, MN

The radar

The Minneapolis radar (KMPX), 20 km from the middle of the area, began a volume at 23:54 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
Jun 25, 7:01 PM CDT	TSTM WND DMG	4 N Burnsville, MN	MEASURED WINDS OF 69 MPH BY TRAINED SPOTTER
Jun 25, 7:15 PM CDT	HAIL 0.88	Eagan, MN
Jun 25, 7:20 PM CDT	TSTM WND DMG	Apple Valley, MN	TREES DOWN

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 10 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 25, 3:35 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.9 hours before the alert went out and 23 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: 38 J/kg
Mixed-layer CIN: -225 J/kg
Mixed-layer LCL: 1153 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 119 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.

062 
WUUS53 KMPX 252351
SVRMPX
MNC037-053-260015-
/O.NEW.KMPX.SV.W.0063.100625T2351Z-100626T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
651 PM CDT FRI JUN 25 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 715 PM CDT

* AT 650 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 65 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  EDINA TO EDEN PRAIRIE...AND MOVING SOUTHEAST AT 40 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  RICHFIELD...
  BLOOMINGTON...
  BURNSVILLE...
  EAGAN...
  APPLE VALLEY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT SATURDAY MORNING
FOR SOUTHERN MINNESOTA AND WEST CENTRAL WISCONSIN.

&&

LAT...LON 4476 9333 4479 9333 4479 9337 4487 9353
      4493 9341 4483 9307 4468 9318
TIME...MOT...LOC 2351Z 318DEG 34KT 4490 9336 4483 9346
WIND...HAIL 65MPH 1.00IN

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 25, 3:37 PM CDT, 3 hours 14 minutes earlier.

Area forecast discussion, Jun 25, 3:37 PM CDT, 3 hours 14 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
337 PM CDT FRI JUN 25 2010

.DISCUSSION...

CONCERNS REVOLVE AROUND THE SEVERE THREAT BOTH THIS EVENING AND
AGAIN SATURDAY EVENING. STORMS ARE STARTING TO FIRE NORTH OF THE
STRONG CAPE/MULI GRADIENT OVER EASTERN SD AND WEST CENTRAL
MN...AND NEAR THE EDGE OF +12 700 MB TEMP. STRONG WARM ADVECTION
AND MOISTURE TRANSPORT INTO THIS BOUNDARY AND GRADIENT WILL
EVENTUALLY DEVELOP AN MCS TRACKING ESE ACROSS MAINLY SOUTHERN MN,
EARLY ON...SUPER CELLS LIKELY IN THE AREA OF STRONG PRESS FALLS
CO-LOCATED WITH THE VERY UNSTABLE REGIME IN SW MN AND EASTERN SD.

THOUGHT ABOUT A FLASH FLOOD WATCH FOR PARTS OF THE SOUTH BUT THE
COMPLEX SHOULD MOVE ALONG QUICKLY BUT CERTAINLY WITH THE
POSSIBILITY OF 2+ INCH LOCALIZED RAIN. MAY NEED SOME FLOOD
STATEMENTS THOUGH. THERE ARE STILL SOME DIFFERENCES IN THE
GUIDANCE TRENDS FOR LATER SATURDAY AND SATURDAY NIGHT. WONDER IF
THE GFS IS A LITTLE ROBUST WITH THE SUB 1000 MB LOW
MOVING/DEVELOPING INTO THE AREA. PREFER MORE OF A NAM /SREF
SOLUTION WITH A BOUNDARY AND WEAKER LOW OVER SOUTHERN MN. WILL
DEPEND AGAIN ON HOW FAR SOUTH ANY OUTFLOWS END UP TONIGHT. THE
UPPER JET MAY ALLOW MORE OF PROLONGED RIGHT ENTRANCE REGION OVER
THE AREA SATURDAY NIGHT...WHICH COULD BE A RISK FOR HEAVY RAIN.
HAVE ALSO OUTLINED AN AREA OF SEVERE OVER SOUTHERN MN LATE
SATURDAY AFTERNOON AND EVENING.

THE SYSTEM APPEARS TO BE ON TRACK TO EXIT THE AREA ON
SUNDAY. THE BUILDING UPPER RIDGE STILL LOOKS TO GIVE US DRY
WEATHER FOR MOST OF NEXT WEEK. THE NAEFS METEOGRAMS AND GEFS POP
FIELDS SHOW A DECENT DRY PERIOD AS WELL.

&&

.AVIATION.../18Z TAF ISSUANCE/
WARM FRONT SEEMS TO BE DRAPED FROM EC SD ACROSS SRN MN... THROUGH
THERE IS SOME INDICATION OF BOUNDARY ALSO ACROSS CENTRAL MN PER
SPC MESOANALYSIS. SHOWERS GENERALLY ALONG AND NORTH/EAST OF COOLER
MID LEVEL TEMPS. FOR AVIATION PURPOSES...LOOKS LIKE SHOWERS WILL
CONTINUE FROM AXN/STC INTO WISC INTO MID AFTERNOON WITH A FEW
ISOLATED STORMS...THEN MUCH BETTER CHANCE OF THUNDER THROUGH MID
EVENING...TAPERING OFF FROM WEST TO EAST. RESIDUAL MOISTURE AND
LIGHT WINDS COULD BRING SOME MVFR CIGS AND VSBYS SATURDAY
MORNING... ESPECIALLY TO CENTRAL MN INTO WISC SITES.

KMSP...THERE IS A SMALL CHANCE OF THUNDER THE NEXT FEW HOURS BUT
PROBABILITY IS MUCH LOWER THAN LATE AFTERNOON INTO THE EVENING.
VCSH SHOULD SUFFICE FOR NOW IN WARM ADVECTION ZONE. AS FOR STRONG
WIND POTENTIAL IN STORMS LATE THIS AFTERNOON AND EVENING...REMOVED
MENTION OF G45 MAINLY BECAUSE BEST CHANCE OF STRONG WIND SEEMS TO
BE LINING UP A LITTLE FARTHER SOUTH. MVFR CIGS/VSBYS POSSIBLE LATE
TONIGHT WITH LIGHT WINDS IN WAKE OF PRECIP.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...NONE.
WI...NONE.
&&

JPR/TDK

Hazardous weather outlook, Jun 25, 2:08 PM CDT, 4 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
208 PM CDT FRI JUN 25 2010

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
261100-
DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS-
BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA-
KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON-
YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA-
REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH-
WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK-
ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE-
208 PM CDT FRI JUN 25 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND
SOUTHERN MINNESOTA...AND WEST CENTRAL WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SEVERE THUNDERSTORMS ARE EXPECTED ACROSS THE AREA DURING THE LATE
AFTERNOON AND TONIGHT. THE BEST CHANCE FOR TORNADOES WILL BE IN
WEST CENTRAL AND SOUTHERN MINNESOTA. LARGE HAIL AND DAMAGING
WINDS ARE ALSO POSSIBLE ACROSS THE ENTIRE AREA. HEAVY RAINFALL IS
ALSO ANTICIPATED. A WARM FRONT EXTENDING FROM SOUTH DAKOTA INTO
SOUTHERN MINNESOTA WILL THE FOCUS FOR THE MOST SEVERE WEATHER.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THE FRONT IS EXPECTED TO LINGER IN THE AREA ON SATURDAY...WITH
THUNDERSTORM REDEVELOPMENT ANTICIPATED ON SATURDAY AFTERNOON AND
EVENING. ANOTHER ROUND OF SEVERE STORMS IS EXPECTED...WITH THE
POTENTIAL FOR DAMAGING WINDS...LARGE HAIL...AND A FEW TORNADOES.
HEAVY RAINFALL WILL ALSO BE POSSIBLE...ESPECIALLY ON SATURDAY
NIGHT.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON
AND EVENING AND AGAIN ON SATURDAY.

In the hours before

Local storm report, Jun 25, 6:32 PM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
632 PM CDT FRI JUN 25 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0626 PM     FLASH FLOOD      1 SE SOUTH ST PAUL      44.88N 93.03W
06/25/2010                   DAKOTA             MN   AMATEUR RADIO

            1 FOOT DEEP AND MOVING AT 494 AND HWY 61

&&

CEC

Local storm report, Jun 25, 6:34 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
634 PM CDT FRI JUN 25 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0630 PM     HAIL             2 NE NEW ULM            44.33N 94.44W
06/25/2010  E1.75 INCH       NICOLLET           MN   TRAINED SPOTTER

            HWY 15 BETWEEN NEW ULM AND KLOSSNER

&&

CEC

Local storm report, Jun 25, 6:37 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
637 PM CDT FRI JUN 25 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0634 PM     HAIL             1 WNW OTISVILLE         45.25N 92.78W
06/25/2010  E2.00 INCH       WASHINGTON         MN   TRAINED SPOTTER

            ESTIMATED OVER 2 INCH HAIL

&&

CEC

Local storm report, Jun 25, 6:39 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
639 PM CDT FRI JUN 25 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0604 PM     TSTM WND DMG     1 NE CLEARWATER         45.42N 94.03W
06/25/2010                   SHERBURNE          MN   STORM CHASER

            NUMEROUS 1 FOOT TREES DOWN

&&

CEC

Local storm report, Jun 25, 6:42 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
642 PM CDT FRI JUN 25 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0633 PM     TSTM WND DMG     1 N NEW ULM             44.33N 94.46W
06/25/2010                   BROWN              MN   NWS EMPLOYEE

            STREET LIGHT POLE BENT OVER VIA STRONG WINDS

&&

CEC

Local storm report, Jun 25, 6:49 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
649 PM CDT FRI JUN 25 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0620 PM     HAIL             3 SE ST GEORGE          44.40N 94.53W
06/25/2010  M2.75 INCH       NICOLLET           MN   TRAINED SPOTTER

0645 PM     TSTM WND DMG     COTTAGE GROVE           44.82N 92.93W
06/25/2010                   WASHINGTON         MN   AMATEUR RADIO

            6 INCH LIMBS AND POWER LINES DOWN

&&

CEC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 6:07 AM CDT	Special Weather Statement	MPX	Douglas, Morrison, Todd	68 min
Jun 25, 6:45 AM CDT	Special Weather Statement	MPX	Douglas, Pope, Stevens	60 min
Jun 25, 8:39 AM CDT	Special Weather Statement	MPX	Stevens	51 min
Jun 25, 9:25 AM CDT	Special Weather Statement	MPX	Chippewa, Swift	65 min
Jun 25, 9:36 AM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Swift	39 min
Jun 25, 11:00 AM CDT	Special Weather Statement	MPX	Redwood, Renville	60 min
Jun 25, 11:04 AM CDT	Special Weather Statement	MPX	Kanabec	56 min
Jun 25, 11:07 AM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Sibley	53 min
Jun 25, 12:35 PM CDT	Special Weather Statement	MPX	Le Sueur, Nicollet	55 min
Jun 25, 3:12 PM CDT	Special Weather Statement	MPX	Chippewa, Kandiyohi, Lac qui Parle, Meeker, Pope, Redwood and 4 more	63 min
Jun 25, 3:31 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Pope, Stearns, Swift	59 min
Jun 25, 3:35 PM CDT	Tornado Warning	MPX	Chippewa, Lac qui Parle, Renville, Yellow Medicine	55 min
Jun 25, 3:51 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Swift	54 min
Jun 25, 4:05 PM CDT	Severe Thunderstorm Warning	MPX	Sherburne, Stearns, Wright	55 min
Jun 25, 4:33 PM CDT	Tornado Warning	MPX	Chippewa, Kandiyohi	57 min
Jun 25, 4:41 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	49 min
Jun 25, 4:56 PM CDT	Tornado Warning	MPX	Chippewa, Renville	49 min
Jun 25, 5:00 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Hennepin, Isanti, Sherburne, Stearns and 1 more	60 min
Jun 25, 5:03 PM CDT	Tornado Warning	MPX	Brown, Nicollet, Redwood, Renville, Sibley, Yellow Medicine	27 min
Jun 25, 5:04 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	33 min
Jun 25, 5:08 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin, Ramsey, Wright	67 min
Jun 25, 5:21 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, McLeod, Meeker, Renville, Sibley	54 min
Jun 25, 5:31 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Renville, Stearns, Swift	59 min
Jun 25, 5:33 PM CDT	Tornado Warning	MPX	Brown, Nicollet, Redwood, Renville, Sibley	42 min
Jun 25, 5:37 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Redwood, Renville, Sibley, Yellow Medicine	53 min
Jun 25, 5:51 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Dakota, Hennepin, Ramsey, Washington	54 min
Jun 25, 5:59 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Hennepin, Sherburne, Wright	42 min
Jun 25, 6:05 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Nicollet, Watonwan	55 min
Jun 25, 6:08 PM CDT	Tornado Warning	MPX	Blue Earth, Brown, Nicollet, Sibley	52 min
Jun 25, 6:12 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Wright	63 min
Jun 25, 6:24 PM CDT	Flash Flood Warning	MPX	Anoka, Hennepin, Ramsey, Washington	3 hr
Jun 25, 6:28 PM CDT	Tornado Warning	MPX	Blue Earth, Brown, Nicollet	47 min
Jun 25, 6:30 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Dakota, Hennepin, Ramsey	60 min
Jun 25, 6:34 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	56 min
Jun 25, 6:52 PM CDT	Tornado Warning	MPX	Blue Earth, Le Sueur, Nicollet	53 min
Jun 25, 6:54 PM CDT	Tornado Warning	MPX	Brown, Redwood	51 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2010 Every severe thunderstorm warning in 2010

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.