Alert archive / Minnesota / Tornado Warnings in 2007
Tornado Warning 26, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Aug 13, 2007, 8:52 PM CDT for Anoka County, Sherburne County, Minnesota. It was in force for 23 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
- Aug 13, 2007, 8:52 PM CDT (01:52 UTC)
- Expired
- Aug 13, 2007, 9:15 PM CDT
- In force
- 23 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Anoka County, MN, Sherburne County, MN
The radar
The Minneapolis radar (KMPX), 58 km from the middle of the area, began a volume at 01:55 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 |
|---|---|---|---|
| Aug 13, 8:55 PM CDT | HAIL 1 | Zimmerman, MN | |
| Aug 13, 9:08 PM CDT | TSTM WND DMG | East Bethel, MN | 1 3/4 INCH DIAMETER BRANCHES DOWN OFF TREES. METAL DOG KENNEL FLATTENED. |
| Aug 13, 9:23 PM CDT | HAIL 0.75 | Ham Lake, MN | 146TH AND HWY 65 |
| Aug 13, 9:23 PM CDT | HAIL 1.75 | Ham Lake, MN | HAIL COVERING GROUND. ESTIMATED 65 MPH WINDS. |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 13, 6:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.9 hours before the alert went out and 59 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.
- Mixed-layer CAPE
- 2096 J/kg
- Mixed-layer CIN
- -245 J/kg
- Mixed-layer LCL
- 1133 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 409 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS53 KMPX 140152
TORMPX
MNC003-141-140215-
/O.NEW.KMPX.TO.W.0026.070814T0152Z-070814T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
852 PM CDT MON AUG 13 2007
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* TORNADO WARNING FOR...
EASTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA...
ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
* UNTIL 915 PM CDT
* AT 851 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS NEAR ELK RIVER...
AND MOVING SOUTHEAST AT 45 MPH.
* LOCATIONS IMPACTED INCLUDE...
ST FRANCIS...
CEDAR...
ANDOVER...
EAST BETHEL...
HAM LAKE...
WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER 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 IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
LAT...LON 4545 9359 4532 9367 4517 9315 4539 9307
4541 9348
$$
JPR1 follow-up statement
000
WWUS53 KMPX 140212
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
910 PM CDT MON AUG 13 2007
MNC003-141-140220-
/O.EXP.KMPX.TO.W.0026.000000T0000Z-070814T0215Z/
SHERBURNE MN-ANOKA MN-
910 PM CDT MON AUG 13 2007
...THE TORNADO WARNING FOR ANOKA AND SHERBURNE COUNTIES EXPIRES AT
915 PM CDT...
AT 905 PM LAW ENFORCEMENT REPORTED A POSSIBLE FUNNEL CLOUD NEAR
HIGHWAY 25 AND BIG LAKE. THE TORNADIC SIGNATURE OF THE STORM HAS
WEAKENED. NO FURTHER TORNADO WARNINGS FOR THIS STORM ARE ANTICIPATED
AT THIS TIME. THIS IS STILL A DANGEROUS STORM CAPABLE OF PRODUCING
LARGE HAIL AND WINDS UP TO 70 MPH. THE STORM WILL CONTINUE TO MOVE
SOUTHEAST AT 45 MPH. A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT
UNTIL 945 PM FOR ANOKA COUNTY.
LAT...LON 4545 9359 4532 9367 4517 9315 4539 9307
4541 9348
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 7:44 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Mille Lacs | 61 min |
| Aug 13, 7:57 PM CDT | Severe Thunderstorm Warning | MPX | Morrison | 18 min |
| Aug 13, 8:08 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec | 52 min |
| Aug 13, 8:17 PM CDT | Severe Thunderstorm Warning | MPX | Isanti, Sherburne | 58 min |
| Aug 13, 8:43 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago | 62 min |
| Aug 13, 8:47 PM CDT | Severe Thunderstorm Warning | MPX | Stearns, Todd | 58 min |
| Aug 13, 9:15 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Ramsey, Washington | 60 min |
| Aug 13, 9:45 PM CDT | Severe Thunderstorm Warning | MPX | Meeker, Stearns, Wright | 60 min |
| Aug 13, 10:42 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Wright | 63 min |
| Aug 13, 10:46 PM CDT | Flash Flood Warning | MPX | Hennepin | 119 min |
| Aug 13, 11:30 PM CDT | Severe Thunderstorm Warning | MPX | Washington | 60 min |
| Aug 13, 11:37 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Goodhue | 53 min |
| Aug 13, 11:48 PM CDT | Flash Flood Warning | MPX | Dakota, Scott | 117 min |
| Aug 13, 11:51 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 29 min |
| Aug 14, 12:26 AM CDT | Flash Flood Warning | MPX | Goodhue | 2 hr |
| Aug 14, 12:29 AM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 48 min |
Nearby
Tornado Warnings in Minnesota, 2007Every tornado warning in 2007Tornadoes in 2007
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.