Alert archive / Michigan / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 46, NWS Gaylord, MI

September 6, 2016Ogemaw County, Roscommon County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Sep 6, 2016, 5:44 PM EDT for Ogemaw County, Roscommon County, Michigan. It was in force for 46 min. 1 report 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 6, 2016, 5:44 PM EDT (21:44 UTC)
Expired
Sep 6, 2016, 6:30 PM EDT
In force
46 min
Issued by
NWS Gaylord, MI
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Ogemaw County, MI, Roscommon County, MI

What was reported inside it

TimeReportWhereRemark
Sep 6, 5:49 PM EDTTSTM WND DMGSaint Helen, MISEVERAL TREES AND POWER LINES DOWN RELAYED FROM ROSCOMMON COUNTY DISPATCH.

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

The nearest sounding before it

Alpena, MI (KAPX), launched 12:00Z, 9.7 hours before the alert went out and 175 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, Alpena, MI at 12:00Z on 2016-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 354 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, Alpena, MI at 12:00Z on 2016-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.193958Sfc1 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
354 J/kg
Mixed-layer CIN
-99 J/kg
Mixed-layer LCL
1026 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

022 
WUUS53 KAPX 062144
SVRAPX
MIC129-143-062230-
/O.NEW.KAPX.SV.W.0046.160906T2144Z-160906T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
544 PM EDT TUE SEP 6 2016

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ROSCOMMON COUNTY IN NORTHERN MICHIGAN...
  SOUTHERN OGEMAW COUNTY IN NORTHERN MICHIGAN...

* UNTIL 630 PM EDT

* AT 543 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER ST. HELEN...
  MOVING SOUTHEAST AT 30 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  WEST BRANCH...ST. HELEN...SELKIRK AND LAKE ST. HELEN. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4433 8455 4445 8447 4436 8396 4416 8421
TIME...MOT...LOC 2143Z 293DEG 26KT 4436 8444 

HAIL...1.00IN
WIND...60MPH
 
$$

GILLEN
1 follow-up statement
605 
WWUS53 KAPX 062211
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
611 PM EDT TUE SEP 6 2016

MIC129-143-062230-
/O.CON.KAPX.SV.W.0046.000000T0000Z-160906T2230Z/
ROSCOMMON MI-OGEMAW MI-
611 PM EDT TUE SEP 6 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM EDT
FOR EAST CENTRAL ROSCOMMON AND SOUTHERN OGEMAW COUNTIES...

AT 611 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED OVER WEST BRANCH...
MOVING SOUTHEAST AT 30 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
WEST BRANCH...ST. HELEN AND SELKIRK. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4428 8446 4443 8439 4436 8396 4416 8421
TIME...MOT...LOC 2211Z 293DEG 26KT 4428 8418 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

GILLEN

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 2:37 PM EDTSpecial Weather StatementAPXAntrim, Benzie, Cheboygan, Emmet, Grand Traverse, Kalkaska and 1 more68 min
Sep 6, 2:48 PM EDTSpecial Marine WarningAPX42 min
Sep 6, 2:58 PM EDTSevere Thunderstorm WarningAPXAntrim, Charlevoix, Otsego47 min
Sep 6, 3:05 PM EDTSevere Thunderstorm WarningAPXCheboygan, Emmet55 min
Sep 6, 3:26 PM EDTSevere Thunderstorm WarningAPXCheboygan, Otsego56 min
Sep 6, 3:57 PM EDTSpecial Weather StatementAPXMontmorency48 min
Sep 6, 4:38 PM EDTSpecial Weather StatementAPXCrawford, Oscoda67 min
Sep 6, 5:32 PM EDTSpecial Weather StatementAPXAlcona, Alpena, Arenac, Gladwin, Iosco, Ogemaw and 1 more88 min
Sep 6, 5:57 PM EDTSevere Thunderstorm WarningAPXGladwin, Ogemaw, Roscommon63 min
Sep 6, 7:00 PM EDTSevere Thunderstorm WarningAPXGladwin60 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2016Every severe thunderstorm warning in 2016

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.