Alert archive / Minnesota / Special Weather Statements in 2021

Special Weather Statement, NWS Twin Cities, MN

June 9, 2021Ramsey County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jun 9, 2021, 7:28 PM CDT for Ramsey County, Minnesota. It was in force for 32 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: Jun 9, 2021, 7:28 PM CDT (00:28 UTC)
Expired: Jun 9, 2021, 8:00 PM CDT
In force: 32 min
Issued by: NWS Twin Cities, MN

County Ramsey County, MN

The radar

The Minneapolis radar (KMPX), 46 km from the middle of the area, began a volume at 00:32 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, 0.5 hours before the alert went out and 48 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 765 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 2305 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

634 
WWUS83 KMPX 100028
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
728 PM CDT Wed Jun 9 2021

MNZ062-063-100100-
Washington-Ramsey-
728 PM CDT Wed Jun 9 2021

...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL WASHINGTON AND
SOUTHEASTERN RAMSEY COUNTIES...

At 727 PM CDT, a strong thunderstorm was located over Maplewood, or
near St. Paul, moving northeast at 15 mph.

Wind gusts up to 50 mph and pea size hail are possible with this
storm.

Locations impacted include...
St. Paul, Woodbury, Maplewood, Roseville, Oakdale, White Bear Lake,
South St. Paul, West St. Paul, Vadnais Heights, Lake Elmo, Mahtomedi
and North St. Paul.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4499 9281 4487 9300 4488 9302 4492 9305
      4492 9311 4495 9318 4510 9304
TIME...MOT...LOC 0027Z 208DEG 11KT 4496 9302 

$$

Dye

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:06 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Ramsey, Washington	24 min
Jun 9, 7:30 PM CDT	Special Weather Statement	MPX	Benton	30 min
Jun 9, 8:13 PM CDT	Special Weather Statement	MPX	Goodhue	47 min
Jun 9, 8:42 PM CDT	Excessive Heat Warning	MPX	Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more	23 hr
Jun 10, 4:18 AM CDT	Special Weather Statement	MPX	Douglas	42 min
Jun 10, 5:00 AM CDT	Special Weather Statement	MPX	Todd	45 min
Jun 10, 2:22 PM CDT	Special Weather Statement	MPX	Mille Lacs	23 min

Nearby

Special Weather Statements in Minnesota, 2021 Every special weather statement in 2021

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.