Alert archive / Minnesota / Special Weather Statements in 2018

Special Weather Statement, NWS Twin Cities, MN

August 14, 2018Douglas County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 14, 2018, 11:44 AM CDT for Douglas County, Minnesota. It was in force for 46 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 14, 2018, 11:44 AM CDT (16:44 UTC)
Expired: Aug 14, 2018, 12:30 PM CDT
In force: 46 min
Issued by: NWS Twin Cities, MN

County Douglas County, MN

The radar

The Minneapolis radar (KMPX), 199 km from the middle of the area, began a volume at 16:48 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, 4.7 hours before the alert went out and 197 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: 315 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 1467 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 14, 6:20 AM CDT, 5 hours 24 minutes earlier.

Area forecast discussion, Aug 14, 6:20 AM CDT, 5 hours 24 minutes before

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Hazardous weather outlook, Aug 14, 4:45 AM CDT, 6 hours 59 minutes before

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In the hours before

Special weather statement, Aug 14, 10:16 AM CDT, 1 hour 28 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1016 AM CDT TUE AUG 14 2018

MNZ065-073-141600-
Renville-Redwood-
1016 AM CDT TUE AUG 14 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL REDWOOD AND
CENTRAL RENVILLE COUNTIES THROUGH 1100 AM CDT...

At 1015 AM CDT, radar indicated strong thunderstorms were located
along a line extending from Bechyn to near Redwood Falls to near
Lucan. Movement was northeast at 15 mph.

Pea size hail is possible with these storms.

Locations impacted include...
Redwood Falls, Olivia, Bird Island, Wabasso, Morton, Delhi, Bechyn,
North Redwood and Redwood Falls Airport.

This includes the following highways...
 U.S. Highway 212 between mile markers 76 and 84.
 U.S. Highway 71 between mile markers 66 and 97.

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

LAT...LON 4482 9482 4453 9495 4428 9530 4428 9555
      4448 9528 4475 9516
TIME...MOT...LOC 1515Z 241DEG 13KT 4470 9509 4449 9519 4433 9543

JPC

Special weather statement, Aug 14, 11:12 AM CDT, 32 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1112 AM CDT TUE AUG 14 2018

MNZ065-073-141700-
Renville-Redwood-
1112 AM CDT TUE AUG 14 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL REDWOOD AND
SOUTH CENTRAL RENVILLE COUNTIES THROUGH 1200 PM CDT...

At 1111 AM CDT, radar indicated strong thunderstorms were located
along a line extending from near Morton to near Lucan. Movement was
northeast at 5 mph.

Half inch hail is possible with these storms.

Locations impacted include...
Redwood Falls, Wabasso, Franklin, Morton, Wanda, North Redwood and
Redwood Falls Airport.

This includes U.S. Highway 71 between mile markers 62 and 83.

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 these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4459 9479 4457 9510 4434 9548 4424 9527
TIME...MOT...LOC 1611Z 235DEG 5KT 4453 9501 4436 9539

JPC

Special weather statement, Aug 14, 11:44 AM CDT, 0 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1144 AM CDT TUE AUG 14 2018

MNZ041-141730-
Douglas-
1144 AM CDT TUE AUG 14 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN DOUGLAS
COUNTY THROUGH 1230 PM CDT...

At 1144 AM CDT, radar indicated strong thunderstorms were located
along a line extending from near Millerville to near Charlesville.
Movement was east at 20 mph.

Half inch hail is possible with these storms.

Locations impacted include...
Alexandria, Evansville, Brandon, Leaf Valley, Miltona, Garfield,
Millerville and Melby.

This includes Interstate 94 in Minnesota between mile markers 81 and
94.

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 4611 9518 4592 9539 4589 9575 4593 9577
      4611 9577
TIME...MOT...LOC 1644Z 280DEG 16KT 4604 9559 4592 9622

JPC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 10:16 AM CDT	Special Weather Statement	MPX	Redwood, Renville	44 min
Aug 14, 11:12 AM CDT	Special Weather Statement	MPX	Redwood	48 min
Aug 14, 11:57 AM CDT	Special Weather Statement	MPX	Brown, Redwood	63 min
Aug 14, 1:50 PM CDT	Special Weather Statement	MPX	Pope	40 min
Aug 14, 2:29 PM CDT	Special Weather Statement	MPX	Kandiyohi	46 min
Aug 14, 2:32 PM CDT	Special Weather Statement	MPX	Chisago	58 min
Aug 14, 3:15 PM CDT	Special Weather Statement	MPX	Wright	15 min
Aug 14, 3:36 PM CDT	Special Weather Statement	MPX	Wright	54 min
Aug 14, 4:42 PM CDT	Special Weather Statement	MPX	Faribault	48 min
Aug 14, 5:25 PM CDT	Special Weather Statement	MPX	Faribault	65 min
Aug 14, 5:30 PM CDT	Special Weather Statement	MPX	Steele	60 min
Aug 14, 6:17 PM CDT	Special Weather Statement	MPX	Steele	43 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.