Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 59, NWS Twin Cities, MN

July 14, 2010Dakota County, Goodhue County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 14, 2010, 2:30 PM CDT for Dakota County, Goodhue County, Minnesota. It was in force for 35 min. 7 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 14, 2010, 2:30 PM CDT (19:30 UTC)
Expired
Jul 14, 2010, 3:05 PM CDT
In force
35 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Dakota County, MN, Goodhue County, MN

The radar

The Minneapolis radar (KMPX), 56 km from the middle of the area, began a volume at 19:32 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 14, 2:30 PM CDTFUNNEL CLOUD3 Nw Northfield, MN
Jul 14, 2:30 PM CDTTSTM WND DMG5 Ne Northfield, MN2 HOMES ON NORTHFIELD BLVD DAMAGED IN WATERFORD TWP. A GARAGE WALL...SHINGLES AND SHED DAMAGED. TIME WAS ESTIMATED.
Jul 14, 2:30 PM CDTTORNADO3 Ne Northfield, MNAN NWS STORM SURVEY TEAM DETERMINED AN EF-1 TORNADO OCCURRED WITH A PATH LENGTH OF APPROXIMATELY 1.5 MILES. DAMAGE WAS DONE TO ONE HOUSE...A CAMPER...AND MULTIPLE SHEDS. ALSO...A SEMI-TRUCK WAS OVERTURNED AND NUMEROUS TREES WERE UPROOTED.
Jul 14, 2:40 PM CDTTSTM WND DMG3 Sw Randolph, MNHOUSE DAMAGED. TIME ESTIMATED.
Jul 14, 2:43 PM CDTFUNNEL CLOUDCastle Rock, MNREPORTED AT HIGHWAY 23
Jul 14, 2:43 PM CDTTORNADO2 Nw Randolph, MN
Jul 14, 2:45 PM CDTTSTM WND DMGHampton, MNTREES AND POWERLINES DOWN AT INTERSECTION OF HWY 47 AND 52.

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
Jul 14, 9:00 AM CDTTornado WatchSPC9 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 7.5 hours before the alert went out and 58 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 2010-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2915 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 2010-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 282 square meters per square second.1939587897Sfc1 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
2915 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
616 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
282 m²/s²
0-3 km storm-relative helicity
379 m²/s²
Significant tornado parameter
0.0
Supercell composite
16.3

Open this sounding in Storm Lab

The text

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

297 
WFUS53 KMPX 141930
TORMPX
MNC037-049-142015-
/O.NEW.KMPX.TO.W.0059.100714T1930Z-100714T2015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
230 PM CDT WED JUL 14 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHWESTERN GOODHUE COUNTY IN SOUTHEAST MINNESOTA...

* UNTIL 315 PM CDT

* AT 227 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 9 MILES SOUTHWEST
  OF RANDOLPH...OR ABOUT 4 MILES NORTHWEST OF NORTHFIELD...AND MOVING
  EAST AT 30 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  STANTON...
  RANDOLPH...
  HAMPTON...
  CANNON FALLS...
  NEW TRIER...
  MIESVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 PM CDT WEDNESDAY
AFTERNOON FOR SOUTHERN MINNESOTA AND NORTHWESTERN WISCONSIN.

&&

LAT...LON 4448 9304 4448 9323 4452 9329 4471 9282
      4448 9275 4447 9304
TIME...MOT...LOC 1930Z 248DEG 28KT 4451 9318

$$
3 follow-up statements
320 
WWUS53 KMPX 141935
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
235 PM CDT WED JUL 14 2010

MNC037-049-142015-
/O.CON.KMPX.TO.W.0059.000000T0000Z-100714T2015Z/
DAKOTA MN-GOODHUE MN-
235 PM CDT WED JUL 14 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN GOODHUE AND
SOUTHERN DAKOTA COUNTIES UNTIL 315 PM CDT...

AT 232 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO.  THIS 
TORNADO WAS LOCATED 4 MILES NORTH OF NORTHFIELD...OR 16 MILES NORTH 
OF FARIBAULT...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  STANTON...RANDOLPH...HAMPTON...CANNON FALLS...NEW TRIER AND
  MIESVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

&&

LAT...LON 4448 9304 4448 9323 4452 9329 4471 9282
      4448 9275 4447 9304
TIME...MOT...LOC 1935Z 248DEG 28KT 4452 9313

$$
344 
WWUS53 KMPX 141944
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
244 PM CDT WED JUL 14 2010

MNC037-049-142015-
/O.CON.KMPX.TO.W.0059.000000T0000Z-100714T2015Z/
DAKOTA MN-GOODHUE MN-
244 PM CDT WED JUL 14 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN GOODHUE AND
SOUTHERN DAKOTA COUNTIES UNTIL 315 PM CDT...

AT 241 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO. THIS 
TORNADO WAS LOCATED NEAR RANDOLPH...OR 18 MILES NORTHEAST OF 
FARIBAULT...MOVING EAST AT 25 MPH. THERE HAVE BEEN MULTIPLE REPORTS
OF TOUCHDOWNS BETWEEN HAMPTON...AND AREAS NORTH OF NORTHFIELD.  

LOCATIONS IMPACTED INCLUDE...
  STANTON...RANDOLPH...HAMPTON...CANNON FALLS...NEW TRIER AND
  MIESVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

&&

LAT...LON 4448 9304 4448 9323 4452 9329 4471 9282
      4448 9275 4447 9304
TIME...MOT...LOC 1942Z 250DEG 21KT 4453 9309

$$
009 
WWUS53 KMPX 142005 RRA
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
305 PM CDT WED JUL 14 2010

MNC037-049-142015-
/O.CAN.KMPX.TO.W.0059.000000T0000Z-100714T2015Z/
DAKOTA MN-GOODHUE MN-
305 PM CDT WED JUL 14 2010

...THE TORNADO WARNING FOR NORTHWESTERN GOODHUE AND SOUTHERN DAKOTA
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

LAT...LON 4448 9304 4448 9323 4452 9329 4471 9282
      4448 9275 4447 9304
TIME...MOT...LOC 2005Z 250DEG 21KT 4458 9291

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 3:12 AM CDTHeat AdvisoryMPXBlue Earth, Brown, Carver, Dakota, Faribault, Freeborn and 13 more15 hr
Jul 14, 6:23 AM CDTSevere Thunderstorm WarningMPXDouglas67 min
Jul 14, 7:21 AM CDTSevere Thunderstorm WarningMPXTodd39 min
Jul 14, 7:29 AM CDTSevere Thunderstorm WarningMPXDouglas19 min
Jul 14, 7:51 AM CDTSevere Thunderstorm WarningMPXMorrison, Todd54 min
Jul 14, 8:27 AM CDTSpecial Weather StatementMPXBenton48 min
Jul 14, 8:35 AM CDTSevere Thunderstorm WarningMPXBenton, Isanti, Kanabec, Mille Lacs, Sherburne40 min
Jul 14, 9:16 AM CDTSpecial Weather StatementMPXKanabec44 min
Jul 14, 9:49 AM CDTSpecial Weather StatementMPXChisago41 min
Jul 14, 1:13 PM CDTSpecial Weather StatementMPXAnoka, Chisago47 min
Jul 14, 1:37 PM CDTAreal Flood AdvisoryMPXAnoka, Chisago, Isanti3 hr
Jul 14, 1:43 PM CDTSevere Thunderstorm WarningMPXChisago47 min
Jul 14, 2:11 PM CDTSevere Thunderstorm WarningMPXDakota, Scott49 min
Jul 14, 2:27 PM CDTSevere Thunderstorm WarningMPXGoodhue, Rice63 min
Jul 14, 2:27 PM CDTSevere Thunderstorm WarningMPXDouglas, Morrison, Pope, Stearns, Todd63 min
Jul 14, 2:33 PM CDTSevere Thunderstorm WarningMPXWashington44 min
Jul 14, 2:54 PM CDTTornado WarningMPXMorrison, Pope, Stearns, Todd51 min
Jul 14, 2:55 PM CDTSevere Thunderstorm WarningMPXGoodhue65 min
Jul 14, 3:44 PM CDTSevere Thunderstorm WarningMPXBenton, Stearns42 min
Jul 14, 3:52 PM CDTTornado WarningMPXBenton, Stearns23 min
Jul 14, 4:13 PM CDTSevere Thunderstorm WarningMPXChippewa, Kandiyohi, Meeker, Stearns62 min

Nearby

Tornado Warnings in Minnesota, 2010Every tornado warning in 2010Tornadoes 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.