Alert archive / Michigan / Tornado Warnings in 2014

Tornado Warning 1, NWS Grand Rapids, MI

July 1, 2014Calhoun County, Michigan

NWS Grand Rapids, MI issued this tornado warning at Jul 1, 2014, 1:53 AM EDT for Calhoun County, Michigan. It was in force for 22 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 1, 2014, 1:53 AM EDT (05:53 UTC)
Expired: Jul 1, 2014, 2:15 AM EDT
In force: 22 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Calhoun County, MI

The radar

The Grand Rapids radar (KGRR), 93 km from the middle of the area, began a volume at 05:54 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 1, 2:00 AM EDT	TSTM WND DMG	Albion, MI	LARGE TREE LIMBS AND BRANCHES DOWNED...GREATER THAN 2 INCHES IN DIAMETER.

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.

Issued	Product	Office	Lasted
Jun 30, 8:23 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 5.9 hours before the alert went out and 123 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: 1381 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1064 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 70 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.

498 
WFUS53 KGRR 010553
TORGRR
MIC025-010630-
/O.NEW.KGRR.TO.W.0001.140701T0553Z-140701T0630Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
153 AM EDT TUE JUL 1 2014

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN CALHOUN COUNTY IN SOUTH CENTRAL MICHIGAN...

* UNTIL 230 AM EDT

* AT 149 AM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR ECKFORD...AND MOVING NORTHEAST AT 65 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL.

  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.

THE WARNING INCLUDES AREAS SURROUNDING THESE LOCATIONS...
  ALBION...             BABCOCK...            RICE CREEK...
  MARENGO...            ECKFORD...            CONDIT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4218 8491 4227 8496 4242 8473 4242 8472
      4224 8472 4224 8471 4218 8471
TIME...MOT...LOC 0552Z 241DEG 62KT 4226 8485

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

LAURENS

2 follow-up statements

371 
WWUS53 KGRR 010603
SVSGRR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
203 AM EDT TUE JUL 1 2014

MIC025-010630-
/O.CON.KGRR.TO.W.0001.000000T0000Z-140701T0630Z/
CALHOUN MI-
203 AM EDT TUE JUL 1 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN CALHOUN
COUNTY UNTIL 230 AM EDT...

AT 158 AM EDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR RICE CREEK...AND MOVING NORTHEAST AT 50 MPH.

HAZARD...TORNADO AND QUARTER SIZE HAIL.

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 AFFECT MAINLY RURAL AREAS OF NORTHEASTERN
CALHOUN COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4232 8489 4242 8473 4242 8472 4218 8471
      4218 8487
TIME...MOT...LOC 0602Z 243DEG 43KT 4232 8474

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

DUKE

133 
WWUS53 KGRR 010615
SVSGRR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
215 AM EDT TUE JUL 1 2014

MIC025-010625-
/O.CAN.KGRR.TO.W.0001.000000T0000Z-140701T0630Z/
CALHOUN MI-
215 AM EDT TUE JUL 1 2014

...THE TORNADO WARNING FOR NORTHEASTERN CALHOUN COUNTY IS
CANCELLED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN
EFFECT FOR THE AREA.  

GUSTY WINDS ARE STILL POSSIBLE WITH THE LINE OF STORMS MOVING EAST 
ACROSS EASTERN CALHOUN COUNTY.

LAT...LON 4232 8489 4242 8473 4242 8472 4218 8471
      4218 8487
TIME...MOT...LOC 0615Z 243DEG 43KT 4239 8455

$$

DUKE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 30, 8:13 PM EDT	Severe Thunderstorm Warning	GRR	Mason, Muskegon, Oceana	85 min
Jun 30, 9:06 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Newaygo	40 min
Jun 30, 9:36 PM EDT	Severe Thunderstorm Warning	GRR	Van Buren	43 min
Jun 30, 10:30 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun, Kalamazoo	46 min
Jun 30, 11:51 PM EDT	Special Marine Warning	GRR		84 min
Jul 1, 12:37 AM EDT	Severe Thunderstorm Warning	GRR	Van Buren	53 min
Jul 1, 12:48 AM EDT	Areal Flood Advisory	GRR	Calhoun, Jackson, Kalamazoo, Van Buren	6 hr
Jul 1, 12:56 AM EDT	Severe Thunderstorm Warning	GRR	Kalamazoo	61 min
Jul 1, 1:23 AM EDT	Severe Thunderstorm Warning	GRR	Calhoun	60 min
Jul 1, 1:59 AM EDT	Severe Thunderstorm Warning	GRR	Eaton, Ingham, Jackson	61 min

Nearby

Tornado Warnings in Michigan, 2014 Every tornado warning in 2014 Tornadoes in 2014

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.