Alert archive / Michigan / Tornado Warnings in 2018

Tornado Warning 5, NWS Detroit, MI

September 25, 2018Monroe County, Michigan

NWS Detroit, MI issued this tornado warning at Sep 25, 2018, 8:18 PM EDT for Monroe County, Michigan. It was in force for 42 min. 5 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
Sep 25, 2018, 8:18 PM EDT (00:18 UTC)
Expired
Sep 25, 2018, 9:00 PM EDT
In force
42 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

County Monroe County, MI

The radar

The Detroit radar (KDTX), 84 km from the middle of the area, began a volume at 00:21 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

TimeReportWhereRemark
Sep 25, 8:23 PM EDTTORNADO 14 Nw Monroe, MITORNADO TRAVELED 4.3 MILES AND CAUSED EF1 DAMAGE TO ROOFS, WINDOWS, AND GARAGE DOORS ON HOMES NEAR TOBEN AND SOUTH STONEY CREEK RDS IN FRENCHTOWN TOWNSHIP IN ADDITION TO MANY TREES THAT WERE DAMAGED OR UPROOTED. MAXIMUM WINDS AROUND 95-100 MPH AND MAXIMUM WIDT
Sep 25, 8:30 PM EDTTSTM WND DMG4 Nnw Monroe, MIPOSSIBLE TORNADO. 3 HOMES SUSTAINED SIGNIFICANT DAMAGE NEAR TOBEN RD AND SOUTH STONEY CREEK RD. HOMES ARE UNINHABITABLE.
Sep 25, 8:42 PM EDTTSTM WND DMG4 Nne Monroe, MIPOSSIBLE TORNADO. MONROE COUNTY CENTRAL DISPATCH REPORTED TREES AND WIRES DOWN IN FRENCHTOWN TOWNSHIP.
Sep 25, 8:44 PM EDTTSTM WND DMG8 Nne Monroe, MIPOSSIBLE TORNADO. EXTENSIVE TREE DAMAGE BLOCKING ROADS NEAR LABO RD IN BERLIN TOWNSHIP.
Sep 25, 8:45 PM EDTTORNADO 05 S Flat Rock, MITORNADO TRAVELED 4 MILES FROM BERLIN TOWNSHIP IN MONROE COUNTY TO WAYNE COUNTY NEAR THE BORDER OF BROWNSTOWN TOWNSHIP AND THE CITY OF GIBRALTAR. EF0 DAMAGE WAS EXHIBITED WITH MULTIPLE LIMBS AND LARGE TREES DOWNED ALONG WITH MISSING SHINGLES TO A HOME NEAR THE

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

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 0.3 hours before the alert went out and 85 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-pSkew-T log-p diagram, Detroit, MI at 00:00Z on 2018-09-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 983 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 00:00Z on 2018-09-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
983 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
686 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
235 m²/s²
Significant tornado parameter
0.5
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted.

689 
WFUS53 KDTX 260018
TORDTX
MIC115-260100-
/O.NEW.KDTX.TO.W.0005.180926T0018Z-180926T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Detroit/Pontiac MI
818 PM EDT TUE SEP 25 2018

The National Weather Service in Detroit/Pontiac has issued a

* Tornado Warning for...
  Northeastern Monroe County in southeastern Michigan...

* Until 900 PM EDT.
    
* At 818 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Maybee, or near Monroe, moving northeast at 25
  mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Carleton around 835 PM EDT.
  Flat Rock around 855 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Newport, Estral Beach, Scofield, South Rockwood, Woodland Beach,
Stony Point, Bolles Harbor, Detroit Beach and Rockwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4195 8356 4209 8348 4209 8329 4203 8319
      4202 8319 4202 8316 4200 8318 4202 8321
      4199 8321 4197 8325 4192 8327 4194 8331
      4193 8334 4189 8333 4189 8336 4188 8334
      4186 8336 4187 8338 4184 8340
TIME...MOT...LOC 0018Z 226DEG 22KT 4195 8347 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

SC
2 follow-up statements
636 
WWUS53 KDTX 260032
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
832 PM EDT TUE SEP 25 2018

MIC115-260100-
/O.CON.KDTX.TO.W.0005.000000T0000Z-180926T0100Z/
Monroe MI-
832 PM EDT TUE SEP 25 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM EDT FOR
NORTHEASTERN MONROE COUNTY...
    
At 831 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Carleton, moving northeast at 25 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Carleton around 835 PM EDT.
  Flat Rock around 855 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Newport, South Rockwood, Estral Beach and Rockwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4198 8347 4209 8348 4209 8329 4203 8319
      4202 8319 4202 8321 4199 8321 4197 8325
      4196 8336
TIME...MOT...LOC 0031Z 226DEG 22KT 4201 8339 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

SC
478 
WWUS53 KDTX 260044
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
844 PM EDT TUE SEP 25 2018

MIC115-260100-
/O.CON.KDTX.TO.W.0005.000000T0000Z-180926T0100Z/
Monroe MI-
844 PM EDT TUE SEP 25 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM EDT FOR
NORTHEASTERN MONROE COUNTY...
    
At 844 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Flat Rock, moving northeast at 30 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornadic thunderstorm will remain over mainly rural areas of
northeastern Monroe County, including the following locations...
Newport, South Rockwood, Estral Beach and Rockwood.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4200 8334 4202 8342 4209 8342 4209 8329
      4203 8319 4202 8319 4202 8321 4199 8321
      4199 8324
TIME...MOT...LOC 0044Z 245DEG 24KT 4204 8329 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

JVC

The office that day

Everything else NWS Detroit, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 25, 8:16 PM EDTSpecial Marine WarningDTX59 min
Sep 25, 8:50 PM EDTTornado WarningDTXMonroe, Wayne15 min
Sep 25, 9:00 PM EDTSpecial Marine WarningDTX30 min

Nearby

Tornado Warnings in Michigan, 2018Every tornado warning in 2018Tornadoes 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.