Alert archive / Michigan / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 39, NWS Gaylord, MI

May 31, 20116 counties in Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at May 31, 2011, 6:33 PM EDT for 6 counties in Michigan. It was in force for 57 min. 4 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
May 31, 2011, 6:33 PM EDT (22:33 UTC)
Expired
May 31, 2011, 7:30 PM EDT
In force
57 min
Issued by
NWS Gaylord, MI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Antrim County, MI, Charlevoix County, MI, Cheboygan County, MI, Emmet County, MI, Kalkaska County, MI, Otsego County, MI

The radar

The NCL Michigan radar (KAPX), 47 km from the middle of the area, began a volume at 22:35 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
May 31, 6:35 PM EDTNON-TSTM WND DMGIndian River, MIMULTIPLE TREES AND POWER LINES DOWN IN INDIAN RIVER AREA.
May 31, 6:36 PM EDTTSTM WND GST 502 Ene Ellsworth, MI
May 31, 6:44 PM EDTTSTM WND DMGBoyne City, MIWIDESPREAD TREES AND POWER LINES DOWN IN EAST JORDAN AND BOYNE CITY.
May 31, 7:00 PM EDTTSTM WND DMG1 W Wolverine, MITREE LIMBS DOWN.

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

The watch it was issued in

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

IssuedProductOfficeLasted
May 31, 1:56 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Alpena, MI (KAPX), launched 12:00Z, 10.6 hours before the alert went out and 211 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 2011-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1224 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 12:00Z on 2011-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -181 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
1224 J/kg
Mixed-layer CIN
-280 J/kg
Mixed-layer LCL
1025 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-181 m²/s²
0-3 km storm-relative helicity
-81 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.

027 
WUUS53 KAPX 312233
SVRAPX
MIC009-029-031-047-079-137-312330-
/O.NEW.KAPX.SV.W.0039.110531T2233Z-110531T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
633 PM EDT TUE MAY 31 2011

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ANTRIM COUNTY IN NORTHERN LOWER MICHIGAN...
  CHARLEVOIX COUNTY IN NORTHERN LOWER MICHIGAN...
  WESTERN CHEBOYGAN COUNTY IN NORTHERN LOWER MICHIGAN...
  EMMET COUNTY IN NORTHERN LOWER MICHIGAN...
  NORTHWESTERN KALKASKA COUNTY IN NORTHERN LOWER MICHIGAN...
  NORTHWESTERN OTSEGO COUNTY IN NORTHERN LOWER MICHIGAN...

* UNTIL 730 PM EDT

* AT 625 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 65 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM BAYSHORE TO KALKASKA...AND MOVING NORTHEAST AT 55 MPH. PENNY
  SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  PETOSKEY...BOYNE CITY...PELLSTON...GAYLORD...INDIAN RIVER...
  STUTSMANVILLE...WILDWOOD...BAY VIEW...WARNER TOWNSHIP...PETOSKEY
  STATE PARK...WALLOON LAKE...PLEASANT VIEW...CLARION...BOYNE
  FALLS...CONWAY...ALBA...ODEN...ELMIRA...REASONERS CORNER AND
  BRUTUS.

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 4494 8539 4527 8539 4537 8521 4537 8504
      4540 8492 4545 8508 4553 8513 4556 8511
      4569 8452 4567 8449 4507 8450 4466 8523
      4488 8538 4490 8542
TIME...MOT...LOC 2233Z 233DEG 46KT 4541 8502 4476 8507
WIND...HAIL 60MPH 0.75IN

$$
2 follow-up statements
802 
WWUS34 KAPX 312307
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
707 PM EDT TUE MAY 31 2011

MIC009-029-031-047-079-137-312330-
/O.CON.KAPX.SV.W.0039.000000T0000Z-110531T2330Z/
CHEBOYGAN MI-ANTRIM MI-KALKASKA MI-OTSEGO MI-EMMET MI-CHARLEVOIX MI-
707 PM EDT TUE MAY 31 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CHARLEVOIX...
EMMET...NORTHWESTERN OTSEGO...NORTHWESTERN KALKASKA...ANTRIM AND
WESTERN CHEBOYGAN COUNTIES UNTIL 730 PM EDT...

AT 657 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 MULLET LAKE TO SPARR...MOVING NORTHEAST AT 60 MPH. PENNY SIZE 
HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS. ADDITIONAL STRONG 
STORMS WERE OCCURRING IN ANTRIM AND NORTHWEST KALKASKA COUNTY AND 
WILL BE MOVING INTO THE AREA OVER THE NEXT COUPLE OF HOURS.

LOCATIONS IMPACTED INCLUDE...

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 4494 8539 4527 8539 4537 8521 4537 8504
      4540 8492 4545 8508 4553 8513 4556 8511
      4569 8452 4567 8449 4507 8450 4466 8523
      4488 8538 4490 8542
TIME...MOT...LOC 2306Z 234DEG 52KT 4569 8444 4512 8441
WIND...HAIL 60MPH 0.75IN

$$
544 
WWUS34 KAPX 312330
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
730 PM EDT TUE MAY 31 2011

MIC009-029-031-047-079-137-312340-
/O.EXP.KAPX.SV.W.0039.000000T0000Z-110531T2330Z/
CHEBOYGAN MI-ANTRIM MI-KALKASKA MI-OTSEGO MI-EMMET MI-CHARLEVOIX MI-
730 PM EDT TUE MAY 31 2011

...THE SEVERE THUNDERSTORM WARNING FOR CHARLEVOIX...EMMET...
NORTHWESTERN OTSEGO...NORTHWESTERN KALKASKA...ANTRIM AND WESTERN
CHEBOYGAN COUNTIES HAS EXPIRED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED JUST 
BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO 
LIFE OR PROPERTY...HOWEVER SMALL HAIL...GUSTY WINDS TO 50 MPH AND 
HEAVY RAIN ARE STILL POSSIBLE WITH THESE THUNDERSTORMS. OTHER STORMS 
WILL CONTINUE TO AFFECT THE AREA THROUGH 830 PM. 

LAT...LON 4494 8539 4527 8539 4537 8521 4537 8504
      4540 8492 4545 8508 4553 8513 4556 8511
      4569 8452 4567 8449 4507 8450 4466 8523
      4488 8538 4490 8542
TIME...MOT...LOC 2330Z 234DEG 52KT 4588 8402 4531 8400
WIND...HAIL <50MPH <.50IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 10:21 PM EDTLakeshore Flood AdvisoryAPX6 hr
May 30, 10:58 PM EDTSmall Craft AdvisoryAPX15 hr
May 31, 2:04 PM EDTGale WarningAPX33 hr
May 31, 3:54 PM EDTWind AdvisoryAPXAlcona, Alpena, Antrim, Arenac, Benzie, Cheboygan and 16 more29 hr
May 31, 4:36 PM EDTSpecial Marine WarningAPX54 min
May 31, 5:25 PM EDTSevere Thunderstorm WarningAPXAntrim, Crawford, Kalkaska, Otsego65 min
May 31, 5:41 PM EDTSpecial Marine WarningAPX94 min
May 31, 5:49 PM EDTSpecial Marine WarningAPX41 min
May 31, 5:54 PM EDTSevere Thunderstorm WarningAPXAntrim, Benzie, Grand Traverse, Kalkaska, Leelanau, Manistee and 1 more66 min
May 31, 6:05 PM EDTSevere Thunderstorm WarningAPXAlpena, Cheboygan, Crawford, Montmorency, Otsego, Presque Isle55 min
May 31, 6:35 PM EDTSpecial Marine WarningAPX25 min
May 31, 6:47 PM EDTSevere Thunderstorm WarningAPXArenac, Gladwin43 min
May 31, 6:49 PM EDTSpecial Marine WarningAPX86 min
May 31, 7:02 PM EDTSpecial Marine WarningAPX58 min
May 31, 7:13 PM EDTSpecial Marine WarningAPX62 min
May 31, 7:40 PM EDTSevere Thunderstorm WarningAPXAlpena, Presque Isle35 min
May 31, 7:57 PM EDTSpecial Marine WarningAPX93 min
May 31, 7:58 PM EDTSevere Thunderstorm WarningAPXAlcona, Iosco46 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2011Every severe thunderstorm warning in 2011

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.