Alert archive / Michigan / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 113, NWS Gaylord, MI

July 15, 2008Alcona County, Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Jul 15, 2008, 7:44 PM EDT for Alcona County, Michigan. It was in force for 25 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: Jul 15, 2008, 7:44 PM EDT (23:44 UTC)
Expired: Jul 15, 2008, 8:09 PM EDT
In force: 25 min
Issued by: NWS Gaylord, MI
Area: Storm-based polygon

County Alcona County, MI

The radar

The NCL Michigan radar (KAPX), 108 km from the middle of the area, began a volume at 23:47 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

Time	Report	Where	Remark
Jul 15, 7:49 PM EDT	HAIL 0.75	2 Nne Lincoln, MI

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, 11.7 hours before the alert went out and 88 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: 1430 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 210 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.

000 
WUUS53 KAPX 152344
SVRAPX
MIC001-160045-
/O.NEW.KAPX.SV.W.0113.080715T2344Z-080716T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GAYLORD MI
744 PM EDT TUE JUL 15 2008

THE NATIONAL WEATHER SERVICE IN GAYLORD HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ALCONA COUNTY IN NORTHERN LOWER MICHIGAN...

* UNTIL 845 PM EDT

* AT 738 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS
  STORM WAS LOCATED NEAR LINCOLN...OR 10 MILES NORTHWEST OF
  HARRISVILLE...MOVING EAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BLACK RIVER...
  HARRISVILLE...
  HARRISVILLE STATE PARK...

REMAIN INDOORS AWAY FROM WINDOWS UNTIL THIS STORM HAS PASSED. IF 
CAUGHT OUTDOORS...STAY AWAY FROM TALL OBJECTS AND MOVE TO A PLACE OF 
SHELTER.

LAT...LON 4465 8328 4462 8331 4455 8331 4454 8332
      4459 8365 4476 8369 4486 8354 4486 8331
      4479 8328 4475 8329 4472 8327
TIME...MOT...LOC 2344Z 282DEG 33KT 4472 8341

$$

LAWRENCE

1 follow-up statement

000 
WWUS34 KAPX 160009
SVSAPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GAYLORD MI
809 PM EDT TUE JUL 15 2008

MIC001-160019-
/O.CAN.KAPX.SV.W.0113.000000T0000Z-080716T0045Z/
ALCONA MI-
809 PM EDT TUE JUL 15 2008

...THE SEVERE THUNDERSTORM WARNING FOR ALCONA COUNTY IS CANCELLED...

AT 809 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE STORM WHICH PROMPTED THE SEVERE THUNDERSTORM WARNING HAS EXITED
THE AREA. THE WARNING HAS THEREFORE BEEN CANCELLED.

AT 749 PM...HAIL TO THE SIZE OF PENNIES WAS REPORTED 2 MILES 
NORTHEAST OF LINCOLN. 

LAT...LON 4465 8328 4462 8331 4455 8331 4454 8332
      4459 8365 4476 8369 4486 8354 4486 8331
      4479 8328 4475 8329 4472 8327
TIME...MOT...LOC 0009Z 282DEG 33KT 4467 8310

$$

LAWRENCE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 3:45 PM EDT	Severe Thunderstorm Warning	APX	Antrim, Crawford, Otsego	45 min
Jul 15, 4:09 PM EDT	Special Marine Warning	APX		66 min
Jul 15, 4:17 PM EDT	Severe Thunderstorm Warning	APX	Crawford, Kalkaska, Oscoda, Otsego	43 min
Jul 15, 4:27 PM EDT	Severe Thunderstorm Warning	APX	Alpena, Montmorency	48 min
Jul 15, 4:35 PM EDT	Severe Thunderstorm Warning	APX	Oscoda	55 min
Jul 15, 4:48 PM EDT	Severe Thunderstorm Warning	APX	Crawford	18 min
Jul 15, 5:00 PM EDT	Severe Thunderstorm Warning	APX	Alcona, Iosco	46 min
Jul 15, 5:35 PM EDT	Severe Thunderstorm Warning	APX	Oscoda	40 min
Jul 15, 6:12 PM EDT	Severe Thunderstorm Warning	APX	Alcona, Iosco, Ogemaw, Oscoda	33 min
Jul 15, 6:40 PM EDT	Severe Thunderstorm Warning	APX	Iosco	32 min
Jul 15, 6:42 PM EDT	Special Marine Warning	APX		63 min
Jul 15, 7:47 PM EDT	Special Marine Warning	APX		58 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2008 Every severe thunderstorm warning in 2008

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.