Alert archive / Michigan / Special Weather Statements in 2021

Special Weather Statement, NWS Northern Indiana

October 21, 2021Saint Joseph County, Michigan

NWS Northern Indiana issued this special weather statement at Oct 21, 2021, 2:40 AM EDT for Saint Joseph County, Michigan. It was in force for 50 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: Oct 21, 2021, 2:40 AM EDT (06:40 UTC)
Expired: Oct 21, 2021, 3:30 AM EDT
In force: 50 min
Issued by: NWS Northern Indiana
Hail: 0.75 in
Wind: 50

County Saint Joseph County, MI

The radar

The Northern Indiana radar (KIWX), 67 km from the middle of the area, began a volume at 06:38 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

Detroit, MI (KDTX), launched 00:00Z, 6.7 hours before the alert went out and 195 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: 1470 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 127 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 Northern Indiana wrote its last area forecast discussion before this special weather statement went out at Oct 21, 1:55 AM EDT, 45 minutes earlier.

Area forecast discussion, Oct 21, 1:55 AM EDT, 45 minutes before

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Hazardous weather outlook, Oct 20, 4:40 AM EDT, 22 hours before

Hazardous Weather Outlook
National Weather Service Northern Indiana
440 AM EDT Wed Oct 20 2021

INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005-
015-016-024-025-210845-
La Porte-St. Joseph-Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-
Pulaski-Marshall-Fulton-Kosciusko-Whitley-Allen-White-Cass-Miami-
Wabash-Huntington-Wells-Adams-Grant-Blackford-Jay-Berrien-Branch-
Hillsdale-Williams-Defiance-Henry-Paulding-Putnam-Van Wert-
440 AM EDT Wed Oct 20 2021 /340 AM CDT Wed Oct 20 2021/

This Hazardous Weather Outlook is for northern Indiana, southwest
Michigan and northwest Ohio.

.DAY ONE...Today and tonight.

There is a low chance of thunderstorms tonight. Severe weather is not
expected.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

LMZ043-046-210845-
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
440 AM EDT Wed Oct 20 2021

...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM THURSDAY TO 5 AM EDT
FRIDAY...

This Hazardous Weather Outlook is for the nearshore waters of
southeastern Lake Michigan.

.DAY ONE...Today and tonight.

An isolated thunderstorm is possible tonight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Small Craft Advisory.

Hazardous conditions for small craft are expected from early Thursday
morning through late Thursday night.

In the hours before

Special weather statement, Oct 21, 1:07 AM EDT, 1 hour 33 minutes before

Special Weather Statement
National Weather Service Northern Indiana
107 AM EDT Thu Oct 21 2021

INZ004-MIZ077-078-210545-
St. Joseph IN-Berrien MI-Cass MI-
107 AM EDT Thu Oct 21 2021

...An area of strong thunderstorms will impact portions of
northwestern St.Joseph, northwestern Cass and southeastern Berrien
Counties through 145 AM EDT...

At 106 AM EDT, Doppler radar was tracking a strong thunderstorm near
Buchanan, moving northeast at 50 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Buchanan around 110 AM EDT.
  Niles and Berrien Springs around 120 AM EDT.

Other locations in the path of this storm include Dowagiac.

This includes the following highways...
 Interstate 80 in Indiana between mile markers 62 and 76.
 Interstate 94 in Michigan near mile marker 42.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4218 8622 4207 8622 4207 8601 4199 8586
      4161 8641 4175 8653 4176 8652 4176 8654
      4180 8657 4219 8624
TIME...MOT...LOC 0506Z 227DEG 43KT 4179 8642

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

MCD

Special weather statement, Oct 21, 1:27 AM EDT, 1 hour 13 minutes before

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Special weather statement, Oct 21, 2:18 AM EDT, 22 minutes before

Special Weather Statement
National Weather Service Northern Indiana
218 AM EDT Thu Oct 21 2021

INZ004-005-MIZ078-079-210645-
St. Joseph IN-Elkhart IN-St. Joseph MI-Cass MI-
218 AM EDT Thu Oct 21 2021

...An area of strong thunderstorms will impact portions of northern
Elkhart, eastern St. Joseph, southeastern Cass and southwestern St.
Joseph Counties through 245 AM EDT...

At 217 AM EDT, Doppler radar was tracking an area of strong
thunderstorms over Elkhart, moving northeast at 45 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Bristol around 225 AM EDT.

Other locations in the path of this storm include Constantine and
White Pigeon.

This includes Interstate 80 in Indiana between mile markers 86 and
108.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
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 4200 8585 4181 8557 4176 8564 4176 8566
      4175 8566 4145 8606 4148 8606 4148 8614
      4155 8626
TIME...MOT...LOC 0617Z 221DEG 40KT 4169 8594

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

MCD

Special weather statement, Oct 21, 2:40 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Northern Indiana
240 AM EDT Thu Oct 21 2021

MIZ078-079-210730-
St. Joseph MI-Cass MI-
240 AM EDT Thu Oct 21 2021

...A strong thunderstorm will impact portions of east central Cass
and St. Joseph Counties through 330 AM EDT...

At 240 AM EDT, Doppler radar was tracking a strong thunderstorm near
Three Rivers, moving northeast at 50 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible.

This strong thunderstorm will be near...
  Three Rivers around 245 AM EDT.
  Centreville around 250 AM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm and may lead to
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 4206 8529 4176 8565 4176 8572 4189 8591
      4207 8576 4207 8529
TIME...MOT...LOC 0640Z 218DEG 43KT 4191 8572

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

MCD

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 21, 1:27 AM EDT	Special Weather Statement	IWX	Pulaski	33 min
Oct 21, 2:18 AM EDT	Special Weather Statement	IWX	Elkhart	27 min
Oct 21, 4:04 AM EDT	Special Weather Statement	IWX	DeKalb, Steuben	41 min
Oct 21, 4:46 AM EDT	Special Weather Statement	IWX	Williams	29 min
Oct 21, 6:06 AM EDT	Special Weather Statement	IWX	Defiance, Paulding	39 min
Oct 21, 1:07 AM EDT	Special Weather Statement	IWX	Cass	38 min
Oct 21, 3:19 AM EDT	Special Weather Statement	IWX	Branch	41 min

Nearby

Special Weather Statements in Michigan, 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.