Alert archive / Michigan / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 4, NWS Grand Rapids, MI

April 18, 2002Lake County, Newaygo County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Apr 18, 2002, 9:19 PM EDT for Lake County, Newaygo County, Michigan. It was in force for 41 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
Apr 18, 2002, 9:19 PM EDT (01:19 UTC)
Expired
Apr 18, 2002, 10:00 PM EDT
In force
41 min
Issued by
NWS Grand Rapids, MI
Area
Counties, with a storm outline in the text

Counties Lake County, MI, Newaygo County, MI

The radar

The Grand Rapids radar (KGRR), 95 km from the middle of the area, began a volume at 01:20 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
Apr 18, 9:25 PM EDTThunderstorm Wind 53 EWhite Cloud, MI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 18, 7:45 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.3 hours before the alert went out and 198 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, Green Bay/Straub, WI at 00:00Z on 2002-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 188 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, Green Bay/Straub, WI at 00:00Z on 2002-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 216 square meters per square second.19395878Sfc1 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
188 J/kg
Mixed-layer CIN
-106 J/kg
Mixed-layer LCL
2321 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
216 m²/s²
0-3 km storm-relative helicity
288 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 KGRR 190119
SVRGRR
MIC085-123-190200-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
918 PM EDT THU APR 18 2002

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LAKE COUNTY IN WEST CENTRAL MICHIGAN
  NEWAYGO COUNTY IN WEST CENTRAL MICHIGAN

* UNTIL 1000 PM EDT

* AT 917 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 4 MILES NORTHWEST OF BITELY TO 7
  MILES SOUTHWEST OF REEMAN...MOVING NORTHEAST AT 35 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
   NIRVANA...WOOSTER AROUND 935 PM EDT
   WHITE CLOUD...NEWAYGO...CHASE AROUND 940 PM EDT
   WOODVILLE...HAWKINS AROUND 945 PM EDT
   CROTON HEIGHTS...CROTON AROUND 950 PM EDT

LARGE HAIL...DAMAGING WINDS...AND HEAVY RAIN ARE EXPECTED FROM THIS
STORM. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.

&&
LAT...LON 4396 8602 4335 8603 4335 8560 4398 8559
$$
DUKE/EO

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 8:14 PM EDTSevere Thunderstorm WarningGRRLake, Newaygo61 min
Apr 18, 8:37 PM EDTSpecial Marine WarningGRR53 min
Apr 18, 8:37 PM EDTSpecial Marine WarningGRR53 min
Apr 18, 8:37 PM EDTSpecial Marine WarningGRR53 min
Apr 18, 8:47 PM EDTSevere Thunderstorm WarningGRRMuskegon, Oceana58 min
Apr 18, 9:44 PM EDTSevere Thunderstorm WarningGRRMecosta, Montcalm46 min
Apr 18, 10:16 PM EDTSevere Thunderstorm WarningGRRClare, Isabella59 min
Apr 18, 10:21 PM EDTSpecial Marine WarningGRR39 min
Apr 18, 10:21 PM EDTSpecial Marine WarningGRR39 min
Apr 18, 10:21 PM EDTSpecial Marine WarningGRR39 min
Apr 18, 10:37 PM EDTSevere Thunderstorm WarningGRRMontcalm23 min
Apr 18, 10:40 PM EDTSevere Thunderstorm WarningGRRKent, Ottawa50 min
Apr 18, 11:28 PM EDTSpecial Marine WarningGRR92 min
Apr 18, 11:28 PM EDTSpecial Marine WarningGRR92 min
Apr 18, 11:44 PM EDTSevere Thunderstorm WarningGRRBarry, Clinton, Eaton, Gratiot, Ionia61 min
Apr 18, 11:52 PM EDTSevere Thunderstorm WarningGRRLake, Mason, Oceana38 min
Apr 19, 12:31 AM EDTSevere Thunderstorm WarningGRRMecosta, Muskegon, Newaygo, Osceola29 min
Apr 19, 12:48 AM EDTSevere Thunderstorm WarningGRRIngham42 min
Apr 19, 3:44 AM EDTSevere Thunderstorm WarningGRRJackson46 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2002Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.