Alert archive / Michigan / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 59, NWS Grand Rapids, MI

July 27, 2012Gratiot County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Jul 27, 2012, 3:15 PM EDT for Gratiot County, Michigan. It was in force for 30 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 27, 2012, 3:15 PM EDT (19:15 UTC)
Expired: Jul 27, 2012, 3:45 PM EDT
In force: 30 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Gratiot County, MI

The radar

The Grand Rapids radar (KGRR), 103 km from the middle of the area, began a volume at 19:18 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 27, 3:20 PM EDT	HAIL 1.5	1 Se Breckenridge, MI	RAINFALLL OF ONE INCH. WIND EST AT 50 MPH

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 5 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 7.3 hours before the alert went out and 113 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: 542 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 553 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

296 
WUUS53 KGRR 271915
SVRGRR
MIC057-272000-
/O.NEW.KGRR.SV.W.0059.120727T1915Z-120727T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
315 PM EDT FRI JUL 27 2012

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN GRATIOT COUNTY IN CENTRAL MICHIGAN...

* UNTIL 400 PM EDT

* AT 309 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
  TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE HAIL...
  AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 7
  MILES NORTHEAST OF ITHACA..AND MOVING EAST AT 15 MPH.

  THIS STORM HAS A HISTORY OF PRODUCING GOLF BALL SIZE HAIL.

* LOCATIONS IMPACTED INCLUDE...
  LAFAYETTE TWP...      WHEELER...            BRECKENRIDGE...
  LANGPORT...           BEEBE...              EDGEWOOD...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS CAN 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.

TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. IF A TORNADO
IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A
STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4328 8437 4330 8460 4346 8461 4347 8461
      4347 8437 4347 8436
TIME...MOT...LOC 1913Z 270DEG 15KT 4337 8447
WIND...HAIL 60MPH 1.00IN

$$

DUKE

1 follow-up statement

714 
WWUS53 KGRR 271945
SVSGRR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
345 PM EDT FRI JUL 27 2012

MIC057-271954-
/O.CAN.KGRR.SV.W.0059.000000T0000Z-120727T2000Z/
GRATIOT MI-
345 PM EDT FRI JUL 27 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN GRATIOT COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA...HOWEVER HEAVY RAIN IS STILL POSSIBLE ACROSS GRATIOT COUNTY 
THROUGH 500 PM. 


LAT...LON 4328 8437 4330 8460 4346 8461 4347 8461
      4347 8437 4347 8436
TIME...MOT...LOC 1944Z 270DEG 15KT 4337 8429

$$

DUKE

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Grand Rapids, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 27, 1:57 PM EDT, 1 hour 18 minutes earlier.

Area forecast discussion, Jul 27, 1:57 PM EDT, 1 hour 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
157 PM EDT FRI JUL 27 2012

.SYNOPSIS...
ISSUED AT 336 AM EDT FRI JUL 27 2012

LOW PRESSURE WILL MOVE OVER LOWER MICHIGAN TODAY AND GENERATE
NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS. SMALL HAIL MAY
ACCOMPANY SOME OF THE STRONGER STORMS. TEMPERATURES WILL TOP OUT
IN THE UPPER 70S TO LOWER 80S. RAIN WILL DIMINISH THIS EVENING AS
THE LOW MOVES AWAY SETTING THE STAGE FOR A DRY WEEKEND.

&&

.UPDATE...
ISSUED AT 1144 AM EDT FRI JUL 27 2012

UPDATED THE FORECAST TO HAVE LIKELY POPS IN ALL AREAS AND MENTION
LOCALLY HEAVY RAINFALL. THE UPPER SHORTWAVE RESPONSIBLE FOR THE
RAIN CAN CLEARLY BE SEEN AS A TIGHT SWIRL ROTATING SOUTHEAST
ACROSS THE LOWER PENINSULA. THE GRR FORECAST AREA WILL BE ON THE
SOUTHERN HALF OF THE COMPACT SHORTWAVE WHICH WILL ALLOW BREAKS IN
THE CLOUD COVER TO OCCUR AND PROVIDING HEATING. THE HEATING WILL
BUILD INSTABILITY AND EXPECT AN INCREASE IN COVERAGE AS WE REACH
THE DIURNAL PEAK THIS AFTERNOON AND EVENING...THEREFORE THE UPDATE
TO LIKELY POPS AREA WIDE. ADDITIONAL SHOWERS AND STORMS ARE
ACTUALLY FORMING UPSTREAM OVER WISCONSIN AND LAKE MICHIGAN IN AN
AREA OF CLEARING.

MODIFYING THE GRB MORNING SOUNDING TO A T/TD OF 76/69 YIELDS CAPE
VALUES OF 2800 J/KG AND LI/S NEAR -9C WITH NO INHIBITION. SO...AREAS
THAT CLIMB INTO THE UPPER 70S THIS AFTERNOON IN ZONES OF PARTIAL
CLEARING WILL YIELD STRONG INSTABILITY. SEVERE WEATHER IS NOT OUT
OF THE REALM OF POSSIBILITIES...WITH FREEZING LEVELS DOWN TO
AROUND 11000FT. HAIL IS PROBABLY THREAT 1...WITH WET MICROBURST
WINDS AT 2...ESPECIALLY IF WE GET GOOD HEATING IN BREAKS.
ALSO...THE STORMS THIS MORNING HAVE BEEN VERY EFFICIENT RAIN
PRODUCERS AND WILL CONTINUE TO BE THIS AFTERNOON WITH PWAT VALUES
STILL UP AROUND AN INCH AND A HALF.

&&

.SHORT TERM...(TODAY THROUGH SUNDAY)
ISSUED AT 336 AM EDT FRI JUL 27 2012

CONCERNS DEAL WITH THE APPROACHING UPPER LOW.

LATEST REGIONAL RADAR SHOWS SHOWERS/STORMS CONTINUING TO DEVELOP
OVER EASTERN WISCONSIN IN ADVANCE OF THE UPPER LOW THAT SHOWS UP
NICELY ON WV IMAGERY OVER NRN WISCONSIN. THIS LOW WILL CONTINUE
MOVING TOWARD AND OVER THE CWA TODAY. DECENT INSTABILITY WITH LI/S
NEAR -5C COUPLED WITH SHEAR NEAR 35 KTS SUGGESTS THAT A FEW OF THE
STORMS COULD BE ON THE STRONG SIDE. CAN/T RULE OUT A SVR STORM
EITHER. THIS SYSTEM HAS BEEN PRETTY WELL HANDLED FOR SEVERAL DAYS
SO CONFIDENCE IS FAIRLY HIGH THAT WE/LL SEE PCPN TODAY. HAIL IS
THE MAIN THREAT GIVEN THE COOLER TEMPS ALOFT ASSOCIATED WITH THE
LOW. CLOUD COVER AND PCPN SHOULD HOLD TEMPS IN THE UPPER 70S TO
LOWER 80S TODAY.

PCPN WILL DIMINISH THIS EVENING AS THE LOW MOVES EAST AND SKIES
WILL GRADUALLY CLEAR. WE SHOULD SEE A DRY WEEKEND AS HIGH PRESSURE
MOVES OVERHEAD.

.LONG TERM...(SUNDAY NIGHT THROUGH THURSDAY)
ISSUED AT 336 AM EDT FRI JUL 27 2012

A PERSISTENT NORTHWEST FLOW ALOFT SHOULD KEEP THE REAL HOT AND HUMID
AIR FROM RETURNING TO SW LWR MI DURING THE LONG TERM PERIOD.
TEMPERATURES WILL AVERAGE ONLY SLIGHTLY ABOVE NORMAL... WITH HIGHS
IN THE LOWER TO MID 80S AND LOWS IN THE LOWER TO MID 60S.

THE NORTHWEST FLOW ALOFT WILL ALSO SEND OCCASIONAL SHORTWAVE
DISTURBANCES THROUGH THE REGION. THESE TROUGHS COULD BRING A FEW
BOUTS/ROUNDS OF SCATTERED SHOWERS AND TSTMS NEXT WEEK... BUT THE
TIMING/FREQUENCY AND COVERAGE OF PCPN WITH THESE EVENTS IS UNCLEAR
AT THIS TIME. NO ORGANIZED OR WIDESPREAD PCPN EVENTS ARE CURRENTLY
FORESEEN... AND IT SHOULD BE DRY THE MAJORITY OF THE TIME.

UNFORTUNATELY THE UPSHOT TO THIS PATTERN AND ASSOCIATED
UNCERTAINTIES IS 20 TO 30 POPS MENTIONED IN ALMOST EACH FCST
PERIOD... WHICH IS BASICALLY A CLIMATOLOGY FCST.

&&

.AVIATION...(FOR THE 18Z TAFS THROUGH 18Z SATURDAY AFTERNOON)
ISSUED AT 157 PM EDT FRI JUL 27 2012

MAIN FOCUS OF THIS SET OF TERMINAL FCSTS IS THE CONVECTION THIS
AFTERNOON AND EARLY THIS EVENING. SCATTERED THUNDERSTORMS ARE
DEVELOPING ACROSS THE ENTIRE AREA AS AN UPPER WAVE MOVES IN FROM THE
NW. COVERAGE IS ENOUGH AROUND THE AREA THAT A TEMPO GROUP WAS
INCLUDED IN FOR ALL SITES. CONDITIONS WILL BE VFR WITH SOME TEMPO
CONDITIONS LOWERING AS MUCH AS IFR IN SOME OF THE HEAVY DOWNPOURS.
SOME SMALL HAIL AND WIND GUSTS TO 40 KNOTS WILL BE POSSIBLE...BUT
NOT LIKELY ENOUGH TO INCLUDE YET.

THE COVERAGE SHOULD DIMINISH SOME BEGINNING AROUND 22Z AS DAYTIME
HEATING STARTS TO WANE. IT WILL BE AT THAT TIME THAT THE BACK EDGE
OF ANY PCPN STARTS TO WORK ACROSS THE AREA AS THE WAVE PASSES. PCPN
SHOULD END FROM NW TO SE THROUGH 02-03Z. SOME LOWER MVFR TYPE CLOUDS
ACROSS UPPER MI AND NRN WI COULD MOVE IN ON THE BACKSIDE FOR A FEW
HOURS BEFORE SKIES CLEAR. SOME FOG IS NOT OUT OF THE QUESTION...BUT
DRIER AIR AND SOME WIND REMAINING UP WILL LIMIT THE THREAT SOME.

WEATHER WILL BE QUIET THEN LATER TONIGHT AND SAT THROUGH 18Z ONLY
SOME CU EXPECTED ON SAT.

&&

.MARINE...
ISSUED AT 336 AM EDT FRI JUL 27 2012

OFFSHORE WINDS 10 TO 20 KNOTS WILL DEVELOP TODAY KEEPING WAVES IN
THE 1 TO 3 FOOT RANGE.

&&

.HYDROLOGY...
ISSUED AT 336 AM EDT FRI JUL 27 2012

BASIN AVERAGE QPF WILL GENERALLY BE LESS THAN A TENTH OF AN INCH.

&&

.GRR WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
LM...NONE.
&&

UPDATE...DUKE
SYNOPSIS...93
SHORT TERM...93
LONG TERM...MEADE
AVIATION...NJJ
HYDROLOGY...93
MARINE...93

Hazardous weather outlook, Jul 27, 11:59 AM EDT, 3 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1159 AM EDT FRI JUL 27 2012

MIZ037>040-043>046-050>052-056>059-064>067-071>074-280830-
MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON-
MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON-
INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON-
1159 AM EDT FRI JUL 27 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. ALL
STORMS WILL BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL AND CLOUD
TO GROUND LIGHTNING STRIKES. THE STRONGER STORMS MAY PRODUCE HAIL UP
TO AROUND DIME SIZE AND GUSTY WINDS TO AROUND 50 MPH. STORM MOVEMENT
WILL BE TO THE EAST AT 20 MPH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

A LOW CHANCE OF THUNDERSTORMS EXISTS EACH DAY MONDAY THROUGH
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION SHOULD NOT BE NEEDED TODAY... BUT PLEASE REPORT
HAIL SIZE AND WIND GUST SPEEDS IF IMPACTED BY A STRONGER STORM.

LMZ844>849-280830-
ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI-
HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI-
WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI-
1159 AM EDT FRI JUL 27 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. ALL
STORMS WILL BE CAPABLE OF PRODUCING LOCALLY HEAVY RAINFALL AND CLOUD
TO WATER LIGHTNING STRIKES. THE STRONGER STORMS MAY PRODUCE HAIL UP
TO AROUND DIME SIZE AND GUSTY WINDS TO AROUND 40 KNOTS. STORM
MOVEMENT WILL BE TO THE EAST AT 20 MPH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

WINDS AND WAVES HAZARDOUS TO SMALL CRAFT AND BEACH GOERS COULD
DEVELOP SOUTH OF GRAND HAVEN ON SATURDAY... FROM MID AFTERNOON
THROUGH EARLY EVENING. WINDS WILL BE FROM THE NORTH.

A LOW CHANCE OF THUNDERSTORMS EXISTS EACH DAY MONDAY THROUGH
THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION SHOULD NOT BE NEEDED TODAY... BUT PLEASE REPORT
HAIL SIZE AND WIND GUST SPEEDS IF IMPACTED BY A STRONGER STORM.

MEADE/DUKE

In the hours before

Special weather statement, Jul 27, 2:06 PM EDT, 1 hour 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
206 PM EDT FRI JUL 27 2012

MIZ037>040-043>046-050>052-056>059-271900-
CLARE-CLINTON-GRATIOT-IONIA-ISABELLA-KENT-LAKE-MASON-MECOSTA-
MONTCALM-MUSKEGON-NEWAYGO-OCEANA-OSCEOLA-OTTAWA-
206 PM EDT FRI JUL 27 2012

...SIGNIFICANT WEATHER ADVISORY...

AT 200 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SCATTERED THUNDERSTORMS ACROSS PORTIONS OF SOUTHWEST LOWER
MICHIGAN...GENERALLY FROM INTERSTATE 96 NORTHWARD. THE STORMS WERE
DRIFTING TO THE EAST AND SOUTHEAST AROUND 20 MPH.

THE STRONGER STORMS THROUGH 300 PM WILL BE CAPABLE OF PRODUCING
PENNY SIZE HAIL...WIND GUSTS TO AROUND 50 MPH...FREQUENT CLOUD TO
GROUND LIGHTNING AND TORRENTIAL DOWNPOURS.

LOCATIONS IMPACTED INCLUDE...
  WALHALLA...           BALDWIN...            HOWARD CITY...
  LAKEVIEW...           SIX LAKES...          EDMORE...
  ALMA...               COMSTOCK PARK...      BELMONT...
  CANNONSBURG...        ADA...                CASCADE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE
OBJECTS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS
TREES. SEEK SHELTER IN A STURDY STRUCTURE IF STORMS APPROACH YOUR
LOCATION.

&&

LAT...LON 4417 8640 4416 8462 4347 8460 4347 8436
      4283 8436 4289 8622 4310 8627 4353 8650
      4371 8651 4378 8645 4385 8644 4406 8652
TIME...MOT...LOC 1758Z 291DEG 16KT 4313 8556

DUKE

Local storm report, Jul 27, 2:32 PM EDT, 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
232 PM EDT FRI JUL 27 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0231 PM     HAIL             1 W ALMA                43.38N 84.68W
07/27/2012  M1.25 INCH       GRATIOT            MI   TRAINED SPOTTER

&&

MWALTON

Local storm report, Jul 27, 2:34 PM EDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
234 PM EDT FRI JUL 27 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0234 PM     HAIL             ALMA                    43.38N 84.66W
07/27/2012  E1.75 INCH       GRATIOT            MI   TRAINED SPOTTER

&&

MWALTON

Local storm report, Jul 27, 2:47 PM EDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
247 PM EDT FRI JUL 27 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0247 PM     HAIL             1 E ALMA                43.38N 84.64W
07/27/2012  E1.00 INCH       GRATIOT            MI   TRAINED SPOTTER

&&

MWALTON

Local storm report, Jul 27, 2:54 PM EDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
254 PM EDT FRI JUL 27 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0250 PM     HAIL             EDMORE                  43.41N 85.04W
07/27/2012  M1.00 INCH       MONTCALM           MI   TRAINED SPOTTER

&&

MWALTON

Special weather statement, Jul 27, 3:09 PM EDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
309 PM EDT FRI JUL 27 2012

MIZ057-058-272015-
IONIA-KENT-
309 PM EDT FRI JUL 27 2012

...SIGNIFICANT WEATHER ADVISORY...

AT 305 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LOWELL...MOVING EAST AT 25 MPH.

NICKEL SIZE HAIL...WIND GUSTS TO 50 MPH...FREQUENT CLOUD TO
GROUND LIGHTNING...TORRENTIAL DOWNPOURS ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
  SARANAC...            LAKE ODESSA...        CLARKSVILLE...
  ORLEANS...            BERLIN CENTER...      BERLIN CENTER...
  IONIA...              MUIR...               LYONS...
  HUBBARDSTON...        PORTLAND...           PEWAMO...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS MAY CAUSE SMALL BRANCHES TO BE BLOWN DOWN...AND LOOSE
OBJECTS TO BLOW AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS
TREES. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS
PASSED.

&&

LAT...LON 4277 8484 4277 8489 4287 8551 4310 8546
      4310 8483
TIME...MOT...LOC 1908Z 281DEG 21KT 4298 8527

DUKE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 1:03 PM EDT	Special Weather Statement	GRR	Ottawa	57 min
Jul 27, 1:26 PM EDT	Special Weather Statement	GRR	Lake	64 min
Jul 27, 2:06 PM EDT	Special Weather Statement	GRR	Clare, Clinton, Gratiot, Ionia, Isabella, Kent and 9 more	54 min
Jul 27, 2:20 PM EDT	Severe Thunderstorm Warning	GRR	Gratiot	55 min
Jul 27, 2:21 PM EDT	Severe Thunderstorm Warning	GRR	Montcalm	54 min
Jul 27, 2:53 PM EDT	Special Marine Warning	GRR		82 min
Jul 27, 3:09 PM EDT	Special Weather Statement	GRR	Ionia	66 min
Jul 27, 4:06 PM EDT	Special Weather Statement	GRR	Clinton	54 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2012 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.