Alert archive / Minnesota / Special Weather Statements in 2018

Special Weather Statement, NWS Twin Cities, MN

August 3, 2018Ramsey County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 3, 2018, 8:51 AM CDT for Ramsey County, Minnesota. It was in force for 24 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 3, 2018, 8:51 AM CDT (13:51 UTC)
Expired: Aug 3, 2018, 9:15 AM CDT
In force: 24 min
Issued by: NWS Twin Cities, MN

County Ramsey County, MN

The radar

The Minneapolis radar (KMPX), 33 km from the middle of the area, began a volume at 13:55 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 1.9 hours before the alert went out and 35 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: 42 J/kg
Mixed-layer CIN: -626 J/kg
Mixed-layer LCL: 955 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 186 m²/s²
0-3 km storm-relative helicity: 260 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

489 
WWUS83 KMPX 031351
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
851 AM CDT FRI AUG 3 2018

MNZ060>062-031415-
Anoka-Hennepin-Ramsey-
851 AM CDT FRI AUG 3 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN HENNEPIN...
SOUTHEASTERN ANOKA AND NORTHERN RAMSEY COUNTIES...

At 850 AM CDT, a strong thunderstorm was located over Brooklyn
Center, or 8 miles north of Minneapolis, moving southeast at 25 mph.

Winds in excess of 30 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Minneapolis, St. Paul, Brooklyn Park, Plymouth, Maple Grove, Coon
Rapids, Blaine, St. Louis Park, Maplewood, Roseville, Brooklyn Center
and Fridley.

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 4507 9349 4517 9334 4516 9314 4507 9302
      4489 9323
TIME...MOT...LOC 1350Z 306DEG 21KT 4508 9330 

$$

ETA

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 7:37 AM CDT	Special Weather Statement	MPX	Meeker	38 min
Aug 3, 7:47 AM CDT	Severe Thunderstorm Warning	MPX	Meeker	43 min
Aug 3, 8:12 AM CDT	Severe Thunderstorm Warning	MPX	Wright	48 min
Aug 3, 8:54 AM CDT	Special Weather Statement	MPX	Hennepin	36 min
Aug 3, 9:10 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Scott	35 min
Aug 3, 9:24 AM CDT	Special Weather Statement	MPX	Washington	36 min
Aug 3, 9:43 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Washington	32 min
Aug 3, 10:36 AM CDT	Special Weather Statement	MPX	Todd	24 min
Aug 3, 11:36 AM CDT	Special Weather Statement	MPX	Kanabec, Mille Lacs	24 min
Aug 3, 12:02 PM CDT	Special Weather Statement	MPX	Kanabec, Mille Lacs	28 min
Aug 3, 1:09 PM CDT	Special Weather Statement	MPX	Kanabec, Mille Lacs	51 min
Aug 3, 2:13 PM CDT	Special Weather Statement	MPX	Kanabec	32 min
Aug 3, 4:21 PM CDT	Special Weather Statement	MPX	Stevens	39 min
Aug 3, 4:32 PM CDT	Special Weather Statement	MPX	Lac qui Parle	43 min
Aug 3, 4:41 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle	49 min
Aug 3, 5:41 PM CDT	Special Weather Statement	MPX	Chippewa, Lac qui Parle, Pope, Swift, Yellow Medicine	34 min
Aug 3, 6:04 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Pope, Stearns, Swift	41 min
Aug 3, 6:28 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker	47 min
Aug 3, 6:34 PM CDT	Tornado Warning	MPX	Kandiyohi, Meeker	26 min
Aug 3, 9:45 AM CDT	Special Weather Statement	MPX	Saint Croix	30 min
Aug 3, 10:12 AM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin, Pierce	33 min
Aug 3, 10:16 AM CDT	Special Weather Statement	MPX	Dunn	29 min
Aug 3, 10:47 AM CDT	Severe Thunderstorm Warning	MPX	Dunn, Eau Claire, Pepin	28 min
Aug 3, 11:15 AM CDT	Special Weather Statement	MPX	Eau Claire	30 min
Aug 3, 11:19 AM CDT	Special Weather Statement	MPX	Rusk	26 min
Aug 3, 11:45 AM CDT	Special Weather Statement	MPX	Chippewa	30 min
Aug 3, 11:49 AM CDT	Special Weather Statement	MPX	Rusk	26 min

Nearby

Special Weather Statements in Minnesota, 2018 Every special weather statement in 2018

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.