Alert archive / Minnesota / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 239, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 29, 2008, 2:21 AM CDT for Morrison County, Minnesota. It was in force for 54 min. 1 report 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 29, 2008, 2:21 AM CDT (07:21 UTC)
- Expired
- Jul 29, 2008, 3:15 AM CDT
- In force
- 54 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
County Morrison County, MN
The radar
The Minneapolis radar (KMPX), 142 km from the middle of the area, began a volume at 07:21 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 |
|---|---|---|---|
| Jul 29, 2:38 AM CDT | TSTM WND GST 58 | 4 Nne Holdingford, MN | TWO 4 INCH LOCUS TREES BROKEN OFF AT STUMP. WINDOW BROKEN OUT OF A NEARBY CAR IN YARD. |
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 |
|---|---|---|---|
| Jul 29, 12:56 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 7.4 hours before the alert went out and 141 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
- 1538 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1238 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS53 KMPX 290721
SVRMPX
MNC097-290815-
/O.NEW.KMPX.SV.W.0239.080729T0721Z-080729T0815Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
221 AM CDT TUE JUL 29 2008
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
WESTERN MORRISON COUNTY IN CENTRAL MINNESOTA...
* UNTIL 315 AM CDT
* AT 217 AM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 65 MPH. THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 8 MILES NORTH OF
SWANVILLE TO UPSALA...AND MOVING EAST AT 31 MPH. LONG PRAIRIE
OBSERVED A WIND GUST TO 58 MPH RECENTLY.
* SOME LOCATIONS INCLUDE...
CUSHING...
FLENSBURG...
RANDALL...
SOBIESKI...
LITTLE FALLS...
ROYALTON...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS.
REPORT ANY SIGNIFICANT WIND OR HAIL DAMAGE TO THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE.
WIND DAMAGE WITH THIS STORM WILL OCCUR WITHOUT MUCH RAIN OR
LIGHTNING. DO NOT WAIT FOR THE SOUND OF THUNDER BEFORE TAKING COVER.
SEEK SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY
FROM WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT
TUESDAY MORNING FOR CENTRAL MINNESOTA.
LAT...LON 4621 9437 4617 9435 4616 9419 4582 9418
4582 9435 4579 9431 4578 9432 4578 9464
4622 9465
TIME...MOT...LOC 0720Z 272DEG 27KT 4603 9461 4579 9456
$$3 follow-up statements
000
WWUS53 KMPX 290735
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
235 AM CDT TUE JUL 29 2008
MNC097-290815-
/O.CON.KMPX.SV.W.0239.000000T0000Z-080729T0815Z/
MORRISON MN-
234 AM CDT TUE JUL 29 2008
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT
FOR WESTERN MORRISON COUNTY...
AT 234 AM CDT...RADAR CONTINUED TO INDICATE A LINE OF SEVERE
THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 65
MPH. THESE SEVERE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 5
MILES NORTH OF FLENSBURG TO BOWLUS...AND MOVING EAST AT 31 MPH.
AT 218 AM CDT...A WIND GUST TO 58 MPH WAS OBSERVED IN LONG PRAIRIE
WITH THESE STORMS.
OTHER LOCATIONS IN THE WARNING INCLUDE CUSHING...BOWLES...UPSALA...
SWANVILLE...SOBIESKI...ROYALTON...RANDALL...LITTLE FALLS...FLENSBURG
AND ELMDALE.
NOT MUCH LIGHTNING OR RAIN MAY BE OBSERVED WITH THESE STORMS...SO DO
NOT WAIT FOR THUNDER TO TAKE COVER.
PREPARE IMMEDIATELY FOR DAMAGING WINDS. SEEK SHELTER NOW INSIDE A
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
REPORT ANY DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY
TO THE NATIONAL WEATHER SERVICE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT
TUESDAY MORNING FOR CENTRAL MINNESOTA.
LAT...LON 4621 9437 4617 9435 4616 9419 4582 9418
4582 9435 4579 9431 4578 9432 4578 9464
4622 9465
TIME...MOT...LOC 0734Z 272DEG 27KT 4601 9451 4579 9436
$$000
WWUS53 KMPX 290752
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
252 AM CDT TUE JUL 29 2008
MNC097-290815-
/O.CON.KMPX.SV.W.0239.000000T0000Z-080729T0815Z/
MORRISON MN-
251 AM CDT TUE JUL 29 2008
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 AM CDT
FOR CENTRAL MORRISON COUNTY...
AT 249 AM CDT...DOPPLER RADAR CONTINUED TO INDICATE STORMS CAPABLE
OF DAMAGING WINDS IN EXCESS OF 60 MPH. THESE SEVERE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 9 MILES NORTH OF LITTLE FALLS TO
4 MILES EAST OF ROYALTON...AND MOVING EAST AT 31 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE ROYALTON AND LITTLE FALLS.
STRONG WINDS WILL PERSIST AFTER THE THUNDERSTORMS HAVE PASSED.
PREPARE IMMEDIATELY FOR DAMAGING WINDS. SEEK SHELTER NOW INSIDE A
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
REPORT ANY DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY
TO THE NATIONAL WEATHER SERVICE.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT
TUESDAY MORNING FOR CENTRAL MINNESOTA.
LAT...LON 4616 9420 4584 9419 4582 9418 4582 9435
4579 9431 4578 9432 4578 9440 4618 9437
TIME...MOT...LOC 0751Z 272DEG 27KT 4611 9434 4582 9418
$$000
WWUS53 KMPX 290806
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
306 AM CDT TUE JUL 29 2008
MNC097-290815-
/O.EXP.KMPX.SV.W.0239.000000T0000Z-080729T0815Z/
MORRISON MN-
305 AM CDT TUE JUL 29 2008
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MORRISON COUNTY
EXPIRES AT 315 AM CDT...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 AM CDT
TUESDAY MORNING FOR CENTRAL MINNESOTA.
EVEN THOUGH THE THUNDERSTORMS HAVE TEMPORARILY ENDED IN MORRISON
COUNTY...STRONG WINDS WILL PERSIST THROUGH SUNRISE...INCLUDING
GUSTS TO NEAR 50 MPH.
LAT...LON 4616 9420 4584 9419 4582 9418 4582 9435
4579 9431 4578 9432 4578 9440 4618 9437
TIME...MOT...LOC 0805Z 272DEG 27KT 4611 9419 4581 9403
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 12:12 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Lac qui Parle, Swift | 63 min |
| Jul 29, 1:13 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Pope, Swift | 47 min |
| Jul 29, 2:08 AM CDT | Severe Thunderstorm Warning | MPX | Stearns | 52 min |
| Jul 29, 2:32 AM CDT | Severe Thunderstorm Warning | MPX | Benton | 43 min |
| Jul 29, 2:59 AM CDT | High Wind Warning | MPX | Douglas, Pope, Stearns, Stevens, Todd | 2 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2008Every severe thunderstorm warning 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.