Alert archive / Michigan / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 29, NWS Gaylord, MI

September 3, 2012Chippewa County, Mackinac County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Sep 3, 2012, 4:33 PM EDT for Chippewa County, Mackinac County, Michigan. It was in force for 57 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
Sep 3, 2012, 4:33 PM EDT (20:33 UTC)
Expired
Sep 3, 2012, 5:30 PM EDT
In force
57 min
Issued by
NWS Gaylord, MI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Chippewa County, MI, Mackinac County, MI

The radar

The NCL Michigan radar (KAPX), 144 km from the middle of the area, began a volume at 20:32 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Sep 3, 4:01 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Alpena, MI (KAPX), launched 12:00Z, 8.6 hours before the alert went out and 261 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 2012-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1160 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

948 
WUUS53 KAPX 032033
SVRAPX
MIC033-097-032130-
/O.NEW.KAPX.SV.W.0029.120903T2033Z-120903T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
433 PM EDT MON SEP 3 2012

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL CHIPPEWA COUNTY IN EASTERN UPPER MICHIGAN...
  NORTHWESTERN MACKINAC COUNTY IN EASTERN UPPER MICHIGAN...

* UNTIL 530 PM EDT

* AT 433 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 5 MILES SOUTHEAST OF NEWBERRY TO BLANEY PARK...AND MOVING EAST
  AT 25 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  GOULD CITY...CORINNE...ENGADINE...HULBERT...NAUBINWAY...
  GILCHRIST...GARNET...REXTON...STRONGS...THREE LAKES...TROUT LAKE...
  EPOUFETTE...FIBRE...EAST LAKE...BREVORT...RUDYARD...LOON LAKE...
  GARFIELD TOWNSHIP AND BATTY DOE LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4625 8565 4625 8525 4637 8524 4631 8446
      4600 8501 4604 8514 4604 8520 4609 8534
      4607 8539 4609 8542 4607 8545 4609 8551
      4597 8564 4595 8569 4597 8587 4613 8587
TIME...MOT...LOC 2033Z 277DEG 21KT 4629 8541 4605 8588
WIND...HAIL 60MPH 0.75IN

$$
2 follow-up statements
200 
WWUS34 KAPX 032100
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
500 PM EDT MON SEP 3 2012

MIC033-097-032130-
/O.CON.KAPX.SV.W.0029.000000T0000Z-120903T2130Z/
MACKINAC MI-CHIPPEWA MI-
500 PM EDT MON SEP 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
CHIPPEWA AND NORTHWESTERN MACKINAC COUNTIES UNTIL 530 PM EDT...

AT 500 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 5 MILES SOUTHEAST OF SOO JUNCTION TO CORINNE...MOVING EAST AT 25
MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  HULBERT...NAUBINWAY...GILCHRIST...GARNET...REXTON...STRONGS...THREE
  LAKES...TROUT LAKE...EPOUFETTE...FIBRE...EAST LAKE...BREVORT AND
  RUDYARD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4625 8565 4625 8525 4637 8524 4631 8446
      4600 8501 4604 8514 4604 8520 4609 8534
      4607 8539 4609 8542 4607 8545 4609 8551
      4597 8564 4595 8569 4597 8587 4613 8587
TIME...MOT...LOC 2100Z 277DEG 21KT 4627 8518 4603 8566
WIND...HAIL 60MPH 0.75IN

$$
062 
WWUS34 KAPX 032126
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
526 PM EDT MON SEP 3 2012

MIC033-097-032135-
/O.EXP.KAPX.SV.W.0029.000000T0000Z-120903T2130Z/
MACKINAC MI-CHIPPEWA MI-
526 PM EDT MON SEP 3 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL CHIPPEWA AND
NORTHWESTERN MACKINAC COUNTIES WILL EXPIRE AT 530 PM EDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THESE
THUNDERSTORMS.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM EDT.

LAT...LON 4625 8565 4625 8525 4637 8524 4631 8446
      4600 8501 4604 8514 4604 8520 4609 8534
      4607 8539 4609 8542 4607 8545 4609 8551
      4597 8564 4595 8569 4597 8587 4613 8587
TIME...MOT...LOC 2125Z 277DEG 21KT 4625 8497 4601 8545
WIND...HAIL <50MPH <.50IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 3, 3:34 PM EDTSpecial Marine WarningAPX86 min
Sep 3, 4:01 PM EDTSpecial Marine WarningAPX89 min
Sep 3, 5:55 PM EDTSpecial Marine WarningAPX86 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2012Every severe thunderstorm warning in 2012

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.