Alert archive / Minnesota / Special Weather Statements in 2018

Special Weather Statement, NWS Twin Cities, MN

August 3, 20185 counties in Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 3, 2018, 5:41 PM CDT for 5 counties in Minnesota. It was in force for 34 min. 2 reports 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: Aug 3, 2018, 5:41 PM CDT (22:41 UTC)
Expired: Aug 3, 2018, 6:15 PM CDT
In force: 34 min
Issued by: NWS Twin Cities, MN

Counties Chippewa County, MN, Lac qui Parle County, MN, Pope County, MN, Swift County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 169 km from the middle of the area, began a volume at 22:40 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
Aug 3, 6:00 PM CDT	TSTM WND GST 49	Clara City 2wsw, MN	MESONET STATION MN021, CLARA CITY 2WSW.
Aug 3, 6:01 PM CDT	TSTM WND DMG	2 Wnw Sunburg, MN	TREES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.7 hours before the alert went out and 167 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.

309 
WWUS83 KMPX 032241
SPSMPX

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
541 PM CDT FRI AUG 3 2018

MNZ048-054>056-064-032315-
Chippewa-Yellow Medicine-Pope-Lac Qui Parle-Swift-
541 PM CDT FRI AUG 3 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT LAC QUI PARLE...
SOUTHERN POPE...CHIPPEWA...CENTRAL YELLOW MEDICINE AND EASTERN SWIFT
COUNTIES...

At 541 PM CDT, radar indicated strong thunderstorms were located
along a line extending from 6 miles south of Lake Minnewaska to 7
miles south of Benson to near Watson to Florida Creek Wildlife
Management Area. Movement was southeast at 40 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Montevideo, Benson, Granite Falls, Canby, Madison, Dawson, Clara
City, Starbuck, Clarkfield, Kerkhoven, Milan and Maynard.

Torrential rainfall is also occurring with these storms, 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 4500 9645 4509 9598 4529 9571 4564 9556
      4549 9513 4541 9516 4541 9525 4522 9525
      4498 9535 4489 9543 4489 9548 4484 9548
      4475 9556 4463 9642 4476 9645
TIME...MOT...LOC 2241Z 315DEG 35KT 4552 9544 4521 9561 4498 9584 4489
9632

$$

BORGHOFF

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, 8:51 AM CDT	Special Weather Statement	MPX	Ramsey	24 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, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.