Alert archive / Minnesota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 48, NWS Twin Cities, MN

June 20, 2019Redwood County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 20, 2019, 6:10 PM CDT for Redwood County, Minnesota. It was in force for 20 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 20, 2019, 6:10 PM CDT (23:10 UTC)
Expired: Jun 20, 2019, 6:30 PM CDT
In force: 20 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Possible
Hail: 1.75 in
Wind: 60.0 mph

County Redwood County, MN

The radar

The Minneapolis radar (KMPX), 123 km from the middle of the area, began a volume at 23:11 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.2 hours before the alert went out and 121 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1592 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

392 
WUUS53 KMPX 202310
SVRMPX
MNC127-202330-
/O.NEW.KMPX.SV.W.0048.190620T2310Z-190620T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Twin Cities/Chanhassen MN
610 PM CDT Thu Jun 20 2019

The National Weather Service in The Twin Cities has issued a

* Severe Thunderstorm Warning for...
  Southeastern Redwood County in southwestern Minnesota...

* Until 630 PM CDT.

* At 609 PM CDT, a severe thunderstorm was located near Morgan, or 18
  miles southeast of Redwood Falls, moving southeast at 20 mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           wind damage to roofs, siding, and trees.

* This severe thunderstorm will remain over mainly rural areas of
  southeastern Redwood County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4432 9499 4436 9491 4435 9486 4428 9486
      4428 9496
TIME...MOT...LOC 2309Z 307DEG 17KT 4432 9491 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH
 
$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 20, 2:32 PM CDT, 3 hours 38 minutes earlier.

Area forecast discussion, Jun 20, 2:32 PM CDT, 3 hours 38 minutes before

Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
232 PM CDT Thu Jun 20 2019

.SHORT TERM...(This evening through Friday night)
Issued at 231 PM CDT Thu Jun 20 2019

The 850 mb theta-e ridge will continue to work into the area this
evening, helping to drive and area of showers with embedded
thunderstorms eastward across the area. However, there should be a
diminishing trend as the activity gets into the eastern portion of
the area tonight and the forcing weakens. We'll have a second
surge of moisture and better instability work into the area Friday
afternoon and Friday night, bringing a better chance for SHRA/TSRA
to the entire area, although the best instability and shear look
to be across the western forecast area late Friday afternoon into
Friday evening.

.LONG TERM...(Saturday through Thursday)
Issued at 231 PM CDT Thu Jun 20 2019

The southwest to northeast oriented baroclinic zone still looks
to stall out Saturday into Monday with several surface waves
moving along it and bringing windows of enhanced precipitation
changes to the area. Tried to get some of that timing into things
rather than blanket the entire time frame with chance PoPs.
However, the guidance (understandably) agrees much less on the
details as we move through the weekend given small differences in
convective development that compound over time. Stuck very close
to the consensus NBM guidance from Saturday night through the
balance of the forecast. We should finally see a break in the more
widespread precipitation by Tuesday, although there will be some
additional chances through the remainder of the week as ridging
becomes established over the central part of the country and we
get into a pattern more favorable for MCS development. It's way
too early to say whether we'll be in the path for repeated MCS
passages, but given the forecast position of the upper jet and
best areas of anticyclonic 250 mb flow, it certainly will be
something to keep an eye on for the middle to end of the week.

&&

.AVIATION...(For the 18Z TAFS through 18Z Friday afternoon)
Issued at 1238 PM CDT Thu Jun 20 2019

The line of showers in western MN is slowly pushing eastwards.
Expect CIGS to drop mainly in the west where showers are
occurring. Mainly VFR conditions prevail, dipping into MVFR for
AXN & RWF overnight. Winds have been bumped up for today,
especially for western MN.

KMSP...VFR likely for the period. MVFR is possible for a brief
period from 20-01Z if we see showers over the airport. Otherwise,
CIGS remain VFR. Wind forecast has trended higher, as they are
overperforming today already.

/OUTLOOK FOR KMSP/
SAT...VFR/MVFR WITH PM SHRA/-TSRA POSSIBLE. WINDS E/SE AT
5-10KTS. SUN...VFR/MVFR WITH -TSRA POSSIBLE. WINDS VRB AT BELOW
5KTS. MON...VFR/MVFR WITH CHC -TSRA POSSIBLE. WINDS W AT 5-10KTS.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
WI...None.
MN...None.
&&

SHORT TERM...
LONG TERM...
AVIATION...TDH

Hazardous weather outlook, Jun 20, 11:24 AM CDT, 6 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
1124 AM CDT Thu Jun 20 2019

MNZ041>045-047>052-054>070-073>078-082>085-091>093-211630-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Lac Qui Parle-Swift-Chippewa-Kandiyohi-
Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-Yellow Medicine-
Renville-McLeod-Sibley-Carver-Scott-Dakota-Redwood-Brown-Nicollet-
Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-Waseca-Steele-Martin-
Faribault-Freeborn-
1124 AM CDT Thu Jun 20 2019

This Hazardous Weather Outlook is for portions of central
Minnesota...east central Minnesota...south central Minnesota...
southeast Minnesota...southwest Minnesota and west central
Minnesota.

.DAY ONE...This Afternoon and Tonight

There is a chance of thunderstorms this afternoon and evening.
Severe weather is not expected, but small hail is possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Periodic chances for thunderstorms will continue into early next
week. The best chance for severe thunderstorms will be Friday and
Friday evening across Minnesota.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed Friday afternoon and
Friday night.

MNZ053-WIZ014>016-023>028-211630-
Chisago-Polk-Barron-Rusk-St. Croix-Pierce-Dunn-Pepin-Chippewa-
Eau Claire-
1124 AM CDT Thu Jun 20 2019

This Hazardous Weather Outlook is for portions of east central
Minnesota...northwest Wisconsin and west central Wisconsin.

.DAY ONE...This Afternoon and Tonight

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Periodic chances for thunderstorms will continue into early next
week. The probability for severe weather is low.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will not be needed.

In the hours before

Special weather statement, Jun 20, 3:34 PM CDT, 2 hours 36 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
334 PM CDT Thu Jun 20 2019

MNZ064-202100-
Yellow Medicine-
334 PM CDT Thu Jun 20 2019

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN YELLOW MEDICINE
COUNTY...

At 333 PM CDT, a strong thunderstorm was located near Clarkfield, or
14 miles south of Montevideo, moving east at 20 mph.

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

Locations impacted include...
Granite Falls, Clarkfield, Wood Lake, Hanley Falls, Spring Creek,
Hazel Run, Granite Falls Airport and Spellman Lake.

This includes the following highways...
 U.S. Highway 212 between mile markers 42 and 49.
 U.S. Highway 59 between mile markers 88 and 101.

LAT...LON 4481 9585 4483 9584 4488 9565 4480 9553
      4479 9550 4478 9553 4477 9551 4477 9550
      4473 9542 4466 9540 4464 9585 4481 9590
TIME...MOT...LOC 2033Z 258DEG 18KT 4475 9578

Local storm report, Jun 20, 4:29 PM CDT, 1 hour 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
429 PM CDT THU JUN 20 2019

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

0353 PM     HAIL             HAZEL RUN               44.75N 95.71W
06/20/2019  M1.75 INCH       YELLOW MEDICINE    MN   PUBLIC

&&

Local storm report, Jun 20, 4:52 PM CDT, 1 hour 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
452 PM CDT THU JUN 20 2019

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

0440 PM     HAIL             ECHO                    44.61N 95.42W
06/20/2019  M1.00 INCH       YELLOW MEDICINE    MN   AMATEUR RADIO

&&

BPH

Local storm report, Jun 20, 4:53 PM CDT, 1 hour 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
453 PM CDT THU JUN 20 2019

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

0446 PM     HAIL             ECHO                    44.62N 95.42W
06/20/2019  M1.25 INCH       YELLOW MEDICINE    MN   PUBLIC

            PHOTO SENT VIA TWITTER.

&&

BPH

Special weather statement, Jun 20, 4:55 PM CDT, 1 hour 15 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
455 PM CDT Thu Jun 20 2019

MNZ073-074-202245-
Brown-Redwood-
455 PM CDT Thu Jun 20 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN REDWOOD AND
NORTHWESTERN BROWN COUNTIES...

At 454 PM CDT, two strong thunderstorm were located near Lamberton
and another near Clements in Redwood county.

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

Locations impacted include...
Sleepy Eye, Springfield, Morgan, Sanborn, Clements, Evan, Wanda and
Cobden.

This includes the following highways...
 U.S. Highway 14 between mile markers 64 and 73, between mile markers
79 and 84, between mile markers 88 and 89, and between mile markers
91 and 92.
 U.S. Highway 71 between mile markers 53 and 65.

LAT...LON 4436 9528 4448 9482 4445 9478 4444 9473
      4431 9466 4423 9505 4421 9520
TIME...MOT...LOC 2154Z 260DEG 18KT 4429 9516

Local storm report, Jun 20, 5:21 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
521 PM CDT THU JUN 20 2019

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

0505 PM     FUNNEL CLOUD     1 SSW BELVIEW           44.59N 95.34W
06/20/2019                   REDWOOD            MN   FIRE DEPT/RESCUE

            FIREFIGHTER SAW A FUNNEL CLOUD MOVING OVER
            THEIR HOME.

&&

BPH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 3:34 PM CDT	Special Weather Statement	MPX	Yellow Medicine	26 min
Jun 20, 3:40 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Yellow Medicine	35 min
Jun 20, 4:12 PM CDT	Severe Thunderstorm Warning	MPX	Yellow Medicine	33 min
Jun 20, 4:45 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville, Yellow Medicine	45 min
Jun 20, 4:55 PM CDT	Special Weather Statement	MPX	Brown	50 min
Jun 20, 5:16 PM CDT	Tornado Warning	MPX	Redwood	29 min
Jun 20, 5:24 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	36 min
Jun 20, 5:37 PM CDT	Tornado Warning Tornado observed	MPX	Redwood	23 min
Jun 20, 5:55 PM CDT	Severe Thunderstorm Warning	MPX	Brown	50 min
Jun 20, 6:27 PM CDT	Tornado Warning	MPX	Brown	33 min
Jun 20, 6:29 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Watonwan	46 min
Jun 20, 6:37 PM CDT	Areal Flood Warning	MPX	Brown, Redwood	3 hr
Jun 20, 6:43 PM CDT	Tornado Warning Tornado observed	MPX	Watonwan	32 min
Jun 20, 6:46 PM CDT	Severe Thunderstorm Warning	MPX	Watonwan	29 min
Jun 20, 6:56 PM CDT	Tornado Warning	MPX	Watonwan	34 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2019 Every severe thunderstorm warning in 2019

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.