Alert archive / Minnesota / Tornado Warnings in 2008

Tornado Warning 45, NWS Twin Cities, MN

July 19, 20084 counties in Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 19, 2008, 3:07 PM CDT for 4 counties in Minnesota. It was in force for 38 min. 4 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 19, 2008, 3:07 PM CDT (20:07 UTC)
Expired
Jul 19, 2008, 3:45 PM CDT
In force
38 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Anoka County, MN, Chisago County, MN, Isanti County, MN, Washington County, MN

The radar

The Minneapolis radar (KMPX), 76 km from the middle of the area, began a volume at 20:08 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 19, 3:22 PM CDTTSTM WND DMGForest Lake, MN2 TO 3 INCH DIAMETER BRANCHES DOWNED ON LAKE DRIVE.
Jul 19, 3:30 PM CDTTSTM WND DMGForest Lake, MNTREE DOWN ACROSS ROAD.
Jul 19, 3:48 PM CDTTSTM WND DMG3 Nnw Forest Lake, MN4 TO 5 INCH BRANCHES DOWN AT KETTLE RIVER BLVD IN COLUMBUS TWP.
Jul 19, 3:48 PM CDTTSTM WND DMG3 Wnw Forest Lake, MN4 TO 5 INCH BRANCHES DOWN AT KETTLE RIVER BLVD IN COLUMBUS TWP.

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 19, 2:28 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.1 hours before the alert went out and 78 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 2008-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2008-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.19395878Sfc1 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
1477 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
95 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 
WFUS53 KMPX 192007
TORMPX
MNC003-025-059-163-192045-
/O.NEW.KMPX.TO.W.0045.080719T2007Z-080719T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
307 PM CDT SAT JUL 19 2008

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHEASTERN ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 345 PM CDT

* AT 303 PM CDT...RADAR WAS TRACKING A SEVERE STORM WITH STRONG
  ROTATION. THE MOST DANGEROUS PART OF THE STORM WAS 10 MILES WEST OF
  WYOMING...OR ABOUT OVER EAST BETHEL...AND MOVING EAST AT 24 MPH.

* SOME LOCATIONS INCLUDE...
  WYOMING...
  FOREST LAKE...
  STACY...
  CHISAGO CITY...
  SCANDIA...
  OTISVILLE...
  SHAFER...
  LINDSTROM...
  CENTER CITY...

THERE WERE OTHER ROTATING THUNDERSTORMS WITHIN THE AREA AS WELL.

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 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4530 9274 4529 9276 4526 9275 4519 9278
      4521 9315 4549 9317 4545 9268
TIME...MOT...LOC 2007Z 266DEG 21KT 4534 9317

$$

LS
3 follow-up statements
000 
WWUS53 KMPX 192032
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
332 PM CDT SAT JUL 19 2008

MNC059-192042-
/O.CAN.KMPX.TO.W.0045.000000T0000Z-080719T2045Z/
ISANTI MN-
332 PM CDT SAT JUL 19 2008

...THE TORNADO WARNING FOR SOUTHEASTERN ISANTI COUNTY IS CANCELLED...

RADAR INDICATED THAT THE SEVERE STORM HAD MOVED OUT OF SOUTHEASTERN 
ISANTI COUNTY. THEREFORE...THE TORNADO WARNING HAS BEEN CANCELLED 
FOR THAT AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4530 9274 4529 9276 4526 9275 4519 9278
      4521 9315 4540 9316 4545 9268
TIME...MOT...LOC 2032Z 266DEG 38KT 4528 9281

$$

MNC003-025-163-192045-
/O.CON.KMPX.TO.W.0045.000000T0000Z-080719T2045Z/
CHISAGO MN-ANOKA MN-WASHINGTON MN-
332 PM CDT SAT JUL 19 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM CDT FOR NORTHERN
WASHINGTON...NORTHEASTERN ANOKA AND SOUTHERN CHISAGO COUNTIES...

AT 329 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG
ROTATION.  THE MOST DANGEROUS PART OF THE STORM WAS LOCATED 3 MILES
NORTHWEST OF SCANDIA...AND MOVING EAST AT 44 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE SCANDIA...OTISVILLE...
WYOMING...STACY...SHAFER...LINDSTROM...FOREST LAKE...CHISAGO CITY AND
CENTER CITY.

OTHER ROTATING THUNDERSTORMS WERE MOVING ACROSS NORTHEASTERN ANOKA 
COUNTY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4530 9274 4529 9276 4526 9275 4519 9278
      4521 9315 4540 9316 4545 9268
TIME...MOT...LOC 2032Z 266DEG 38KT 4528 9281

$$

LS
000 
WWUS53 KMPX 192036
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
336 PM CDT SAT JUL 19 2008

MNC003-192046-
/O.CAN.KMPX.TO.W.0045.000000T0000Z-080719T2045Z/
ANOKA MN-
336 PM CDT SAT JUL 19 2008

...THE TORNADO WARNING FOR NORTHEASTERN ANOKA COUNTY IS CANCELLED...

RADAR INDICATED THAT THE SEVERE STORM HAD WEAKENED OR MOVED OUT OF 
NORTHEASTERN ANOKA COUNTY. THEREFORE...THE TORNADO WARNING HAS BEEN 
CANCELLED FOR THAT AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4530 9274 4529 9276 4526 9275 4519 9278
      4521 9300 4540 9300 4545 9268
TIME...MOT...LOC 2036Z 266DEG 38KT 4529 9275

$$

MNC025-163-192045-
/O.CON.KMPX.TO.W.0045.000000T0000Z-080719T2045Z/
CHISAGO MN-WASHINGTON MN-
336 PM CDT SAT JUL 19 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM CDT FOR NORTHERN
WASHINGTON AND SOUTHEASTERN CHISAGO COUNTIES...

AT 333 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG
ROTATION.  THE MOST DANGEROUS PART OF THE STORM WAS LOCATED NEAR
SCANDIA...OR ABOUT 2 MILES NORTH OF SCANDIA...AND MOVING EAST AT 44
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE SCANDIA...OTISVILLE...
WYOMING...STACY...SHAFER...LINDSTROM...FOREST LAKE...CHISAGO CITY AND
CENTER CITY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4530 9274 4529 9276 4526 9275 4519 9278
      4521 9300 4540 9300 4545 9268
TIME...MOT...LOC 2036Z 266DEG 38KT 4529 9275

$$

LS
000 
WWUS53 KMPX 192046
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
346 PM CDT SAT JUL 19 2008

MNC025-163-192056-
/O.EXP.KMPX.TO.W.0045.000000T0000Z-080719T2045Z/
CHISAGO MN-WASHINGTON MN-
346 PM CDT SAT JUL 19 2008

...THE TORNADO WARNING FOR NORTHERN WASHINGTON AND SOUTHEASTERN
CHISAGO COUNTIES EXPIRES AT 345 PM CDT...

TORNADIC SEVERE STORMS HAVE DISSIPATED IN THE IMMEDIATE WARNED AREA. 
HOWEVER...MORE THUNDERSTORMS WERE DEVELOPING IN THE AREA...REMAIN 
ALERT FOR ADDITIONAL WARNINGS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SATURDAY EVENING
FOR SOUTHEASTERN MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4530 9274 4529 9276 4526 9275 4519 9278
      4521 9300 4540 9300 4545 9268
TIME...MOT...LOC 2036Z 266DEG 38KT 4529 9275

$$

LS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 1:59 PM CDTSevere Thunderstorm WarningMPXSherburne46 min
Jul 19, 2:02 PM CDTTornado WarningMPXSherburne43 min
Jul 19, 2:16 PM CDTTornado WarningMPXIsanti, Mille Lacs44 min
Jul 19, 2:24 PM CDTSevere Thunderstorm WarningMPXAnoka, Isanti51 min
Jul 19, 2:35 PM CDTTornado WarningMPXAnoka, Isanti, Sherburne40 min
Jul 19, 2:59 PM CDTTornado WarningMPXChisago, Isanti20 min
Jul 19, 4:11 PM CDTFlash Flood WarningMPXMartin2 hr
Jul 19, 6:03 PM CDTFlash Flood WarningMPXFreeborn2 hr

Nearby

Tornado Warnings in Minnesota, 2008Every tornado warning in 2008Tornadoes 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.