Alert archive / Minnesota / Tornado Warnings in 2008

Tornado Warning 43, NWS Twin Cities, MN

July 19, 2008Anoka County, Isanti County, Sherburne County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 19, 2008, 2:35 PM CDT for Anoka County, Isanti County, Sherburne County, Minnesota. It was in force for 40 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, 2:35 PM CDT (19:35 UTC)
Expired
Jul 19, 2008, 3:15 PM CDT
In force
40 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Anoka County, MN, Isanti County, MN, Sherburne County, MN

The radar

The Minneapolis radar (KMPX), 66 km from the middle of the area, began a volume at 19:38 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, 2:40 PM CDTFUNNEL CLOUD2 S St Francis, MNSPOTTED NEAR NOWTHEN AND TROUT BROOK ROAD IN BURNS TOWNSHIP.
Jul 19, 2:43 PM CDTHAIL 0.751 W St Francis, MNON HWY 47 1 MILE W OF TOWN.
Jul 19, 2:55 PM CDTHAIL 1St Francis, MNNEAR HWY 28 AND BARNIUM.
Jul 19, 3:15 PM CDTTSTM WND DMG3 Wsw Bethel, MN3 TO 4 FT DIAMETER TREE DOWN BLOCKING NIGHTINGALE ST IN EAST BETHEL.

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, 7.6 hours before the alert went out and 67 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 191935
TORMPX
MNC003-059-141-192015-
/O.NEW.KMPX.TO.W.0043.080719T1935Z-080719T2015Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHEASTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA...
  NORTHERN ANOKA COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 315 PM CDT

* AT 234 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 4 MILES NORTHEAST
  OF ELK RIVER...AND MOVING EAST AT 28 MPH.

* SOME LOCATIONS INCLUDE...
  ST FRANCIS...
  CEDAR...
  BETHEL...
  ISANTI...
  ATHENS...
  EAST BETHEL...
  BODUM...

A TORNADO WAS REPORTED NEAR BIG LAKE AT 225 PM WITH THIS TORNADIC 
STORM.

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

LAT...LON 4552 9317 4530 9316 4530 9357 4547 9366
TIME...MOT...LOC 1935Z 267DEG 25KT 4539 9352

$$

LS
1 follow-up statement
000 
WWUS53 KMPX 191949
SVSMPX

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

MNC003-059-141-192015-
/O.CON.KMPX.TO.W.0043.000000T0000Z-080719T2015Z/
ISANTI MN-SHERBURNE MN-ANOKA MN-
249 PM CDT SAT JUL 19 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR
NORTHWESTERN ANOKA...SOUTHEASTERN SHERBURNE AND SOUTHERN ISANTI
COUNTIES...

AT 240 PM CDT...A FUNNEL CLOUD WAS REPORTED IN BURNS TOWNSHIP.

AT 246 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG
ROTATION.  THE TORNADIC THUNDERSTORM WAS LOCATED NEAR ST FRANCIS...OR
ABOUT OVER ST FRANCIS...AND MOVING EAST AT 38 MPH. MORE ROTATING 
THUNDERSTORMS WERE MOVING INTO SOUTHEASTERN SHERBURNE COUNTY.

OTHER LOCATIONS IN THE WARNING INCLUDE CEDAR...BODUM...ATHENS...
ZIMMERMAN...ST FRANCIS...ISANTI...ELK RIVER...EAST BETHEL AND BETHEL.

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

LAT...LON 4552 9317 4530 9316 4530 9357 4547 9366
TIME...MOT...LOC 1949Z 272DEG 33KT 4536 9334

$$

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, 2:59 PM CDTTornado WarningMPXChisago, Isanti20 min
Jul 19, 3:07 PM CDTTornado WarningMPXAnoka, Chisago, Isanti, Washington38 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.