Alert archive / Minnesota / Special Weather Statements in 2009

Special Weather Statement, NWS Twin Cities, MN

August 8, 2009Benton County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 8, 2009, 5:29 AM CDT for Benton County, Minnesota. It was in force for 61 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 8, 2009, 5:29 AM CDT (10:29 UTC)
Expired
Aug 8, 2009, 6:30 AM CDT
In force
61 min
Issued by
NWS Twin Cities, MN

County Benton County, MN

The radar

The Minneapolis radar (KMPX), 87 km from the middle of the area, began a volume at 10:29 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, 10.5 hours before the alert went out and 86 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 2009-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2009-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 183 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
1 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
517 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
183 m²/s²
0-3 km storm-relative helicity
341 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this special weather statement went out at Aug 8, 4:55 AM CDT, 34 minutes earlier.

Area forecast discussion, Aug 8, 4:55 AM CDT, 34 minutes before
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Hazardous weather outlook, Aug 8, 5:05 AM CDT, 24 minutes before
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In the hours before

Local storm report, Aug 8, 2:10 AM CDT, 3 hours 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
210 AM CDT SAT AUG 08 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0210 AM     FLASH FLOOD      SHAKOPEE                44.77N 93.48W
08/08/2009                   SCOTT              MN   LAW ENFORCEMENT

            COUNTY DISPATCH REPORTED CARS STALLED OUT IN HIGH WATER
            AT SEVERAL LOCATIONS ACROSS SHAKOPEE.

&&

MPG
Local storm report, Aug 8, 2:57 AM CDT, 2 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
257 AM CDT SAT AUG 08 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0210 AM     HEAVY RAIN       PRESCOTT                44.75N 92.79W
08/08/2009  M5.50 INCH       PIERCE             WI   TRAINED SPOTTER

0200 AM     FLASH FLOOD      1 N APPLE VALLEY        44.76N 93.20W
08/08/2009                   DAKOTA             MN   TRAINED SPOTTER

            STREET FLOODING

0200 AM     FLASH FLOOD      3 ESE BURNSVILLE        44.75N 93.22W
08/08/2009                   DAKOTA             MN   TRAINED SPOTTER

            STREET FLOODING

&&

KME
Local storm report, Aug 8, 5:05 AM CDT, 24 minutes before
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Special weather statement, Aug 8, 5:29 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 10:39 PM CDTSpecial Weather StatementMPXSibley51 min
Aug 7, 11:04 PM CDTSpecial Weather StatementMPXRenville26 min
Aug 8, 12:24 AM CDTAreal Flood AdvisoryMPXAnoka, Carver, Dakota, Hennepin, McLeod, Ramsey and 3 more3 hr
Aug 8, 12:28 AM CDTAreal Flood AdvisoryMPXAnoka, Carver, Dakota, Hennepin, McLeod, Ramsey and 3 more3 hr
Aug 8, 1:01 AM CDTFlash Flood WarningMPXCarver, Dakota, Hennepin, Ramsey, Washington4 hr
Aug 8, 1:48 AM CDTFlash Flood WarningMPXCarver, Dakota, Scott, Washington4 hr
Aug 8, 4:06 AM CDTFlash Flood WatchMPXAnoka, Carver, Chippewa, Dakota, Goodhue, Hennepin and 14 more19 hr
Aug 8, 4:11 AM CDTSevere Thunderstorm WarningMPXMeeker, Sherburne, Stearns, Wright38 min
Aug 8, 4:19 AM CDTHeat AdvisoryMPXBlue Earth, Brown, Carver, Dakota, Faribault, Freeborn and 14 more14 hr
Aug 8, 5:02 AM CDTAreal Flood AdvisoryMPXBenton, Mille Lacs, Sherburne, Stearns, Wright3 hr
Aug 8, 8:06 AM CDTSevere Thunderstorm WarningMPXRenville39 min
Aug 8, 9:32 AM CDTSpecial Weather StatementMPXHennepin, Ramsey43 min
Aug 8, 9:43 AM CDTFlash Flood WarningMPXAnoka, Hennepin, Wright3 hr
Aug 8, 3:46 PM CDTSevere Thunderstorm WarningMPXBrown, Redwood28 min
Aug 8, 2:03 AM CDTFlash Flood WarningMPXDunn, Eau Claire, Pepin, Pierce4 hr
Aug 8, 8:11 AM CDTSpecial Weather StatementMPXPolk49 min
Aug 8, 8:37 AM CDTSevere Thunderstorm WarningMPXPolk, Saint Croix38 min
Aug 8, 9:05 AM CDTSpecial Weather StatementMPXBarron40 min
Aug 8, 10:18 AM CDTSpecial Weather StatementMPXChippewa42 min
Aug 8, 10:33 AM CDTSpecial Weather StatementMPXSaint Croix57 min
Aug 8, 10:59 AM CDTSevere Thunderstorm WarningMPXDunn, Saint Croix46 min
Aug 8, 11:58 AM CDTSpecial Weather StatementMPXChippewa47 min

Nearby

Special Weather Statements in Minnesota, 2009Every special weather statement 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.