Alert archive / Minnesota / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 84, NWS Twin Cities, MN

August 19, 2009Chippewa County, Kandiyohi County, Swift County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 19, 2009, 12:41 AM CDT for Chippewa County, Kandiyohi County, Swift County, Minnesota. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 19, 2009, 12:41 AM CDT (05:41 UTC)
Expired
Aug 19, 2009, 1:15 AM CDT
In force
34 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Chippewa County, MN, Kandiyohi County, MN, Swift County, MN

The radar

The Minneapolis radar (KMPX), 140 km from the middle of the area, began a volume at 05:41 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.7 hours before the alert went out and 137 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 00:00Z on 2009-08-19Temperature 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 00:00Z on 2009-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.193958Sfc1 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
2229 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
175 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 
WUUS53 KMPX 190541
SVRMPX
MNC023-067-151-190615-
/O.NEW.KMPX.SV.W.0084.090819T0541Z-090819T0615Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1241 AM CDT WED AUG 19 2009

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL KANDIYOHI COUNTY IN CENTRAL MINNESOTA...
  SOUTHEASTERN SWIFT COUNTY IN WEST CENTRAL MINNESOTA...
  NORTHEASTERN CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 115 AM CDT

* AT 1238 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH.
  THIS STORM WAS LOCATED 8 MILES NORTHWEST OF RAYMOND...OR ABOUT 16
  MILES WEST OF WILLMAR...AND MOVING NORTHEAST AT 15 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  WILLMAR...
  PENNOCK...
  KERKHOVEN...
  PRIAM...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4531 9530 4512 9499 4499 9531 4512 9552
TIME...MOT...LOC 0540Z 226DEG 14KT 4508 9537

$$
1 follow-up statement
000 
WWUS53 KMPX 190602
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
102 AM CDT WED AUG 19 2009

MNC023-067-151-190615-
/O.CON.KMPX.SV.W.0084.000000T0000Z-090819T0615Z/
KANDIYOHI MN-SWIFT MN-CHIPPEWA MN-
102 AM CDT WED AUG 19 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 AM CDT
FOR WEST CENTRAL KANDIYOHI COUNTY IN CENTRAL MINNESOTA...AND
NORTHEASTERN CHIPPEWA  AND SOUTHEASTERN SWIFT COUNTIES IN WEST
CENTRAL MINNESOTA...

AT 1259 AM CDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...
CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
OF 60 MPH. THE SEVERE STORM WAS LOCATED 3 MILES SOUTH OF KERKHOVEN...
AND MOVING NORTHEAST AT 15 MPH.

LOCATIONS IN THE WARNING INCLUDE...
KERKHOVEN AND PENNOCK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4504 9520 4516 9547 4531 9530 4512 9499
TIME...MOT...LOC 0602Z 207DEG 14KT 4517 9531

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 11:39 PM CDTSevere Thunderstorm WarningMPXChippewa, Lac qui Parle, Stevens, Swift36 min
Aug 19, 12:20 AM CDTSpecial Weather StatementMPXSwift40 min
Aug 19, 12:59 AM CDTSpecial Weather StatementMPXSwift46 min
Aug 19, 1:18 AM CDTSpecial Weather StatementMPXKandiyohi42 min
Aug 19, 2:16 AM CDTAreal Flood AdvisoryMPXChippewa, Kandiyohi, Lac qui Parle, Meeker, Swift5 hr
Aug 19, 1:04 PM CDTAreal Flood AdvisoryMPXAnoka, Carver, Chisago, Hennepin, Isanti, Kanabec and 7 more6 hr
Aug 19, 2:11 PM CDTTornado WarningMPXAnoka, Hennepin, Ramsey34 min
Aug 19, 2:16 PM CDTTornado WarningMPXDakota29 min
Aug 19, 2:53 PM CDTTornado WarningMPXDakota, Ramsey, Washington22 min
Aug 19, 3:16 PM CDTTornado WarningMPXAnoka, Ramsey, Washington29 min
Aug 19, 3:46 PM CDTTornado WarningMPXAnoka, Chisago, Washington29 min
Aug 19, 4:21 PM CDTTornado WarningMPXChisago39 min
Aug 19, 4:49 PM CDTSevere Thunderstorm WarningMPXRedwood, Yellow Medicine41 min
Aug 19, 5:18 PM CDTSevere Thunderstorm WarningMPXRedwood21 min
Aug 19, 5:24 PM CDTSpecial Weather StatementMPXChippewa, Swift51 min
Aug 19, 6:02 PM CDTSevere Thunderstorm WarningMPXBrown, Redwood58 min
Aug 19, 6:19 PM CDTTornado WarningMPXBrown26 min
Aug 19, 6:29 PM CDTTornado WarningMPXBrown31 min
Aug 19, 6:39 PM CDTTornado WarningMPXBrown36 min
Aug 19, 6:44 PM CDTSevere Thunderstorm WarningMPXChippewa, Renville44 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2009Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.