Alert archive / Michigan / Special Weather Statements in 2011
Special Weather Statement, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this special weather statement at Oct 23, 2011, 11:17 PM EDT for Mecosta County, Muskegon County, Newaygo County, Michigan. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 23, 2011, 11:17 PM EDT (03:17 UTC)
- Expired
- Oct 24, 2011, 12:00 AM EDT
- In force
- 43 min
- Issued by
- NWS Grand Rapids, MI
Counties Mecosta County, MI, Muskegon County, MI, Newaygo County, MI
The radar
The Grand Rapids radar (KGRR), 81 km from the middle of the area, began a volume at 03:16 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.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.3 hours before the alert went out and 197 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.
- Mixed-layer CAPE
- 7 J/kg
- Mixed-layer CIN
- -173 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 357 m²/s²
- 0-3 km storm-relative helicity
- 361 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
324
WWUS83 KGRR 240317
SPSGRR
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1117 PM EDT SUN OCT 23 2011
MIZ043>045-050-051-240400-
MECOSTA-MONTCALM-MUSKEGON-NEWAYGO-OCEANA-
1117 PM EDT SUN OCT 23 2011
...SIGNIFICANT WEATHER ADVISORY...
AT 1110 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF RAPIDLY DEVELOPING THUNDERSTORMS ALONG A LINE EXTENDING FROM
23 MILES NORTHWEST OF NEWAYGO TO 29 MILES WEST OF NEWAYGO...MOVING
EAST AT 45 MPH.
ONE HALF INCH DIAMETER HAIL...WINDS GREATER THAN 30 MPH...FREQUENT
CLOUD TO GROUND LIGHTNING...ARE POSSIBLE WITH THESE STORMS.
* THUNDERSTORMS WILL BE NEAR...
BITELY AND 6 MILES SOUTH OF LILLEY BY 1125 PM EDT...
AETNA BY 1130 PM EDT...
WOOSTER AND FREMONT BY 1135 PM EDT...
BISHOP AND WHITE CLOUD BY 1140 PM EDT...
BIG RAPIDS AND BIG PRAIRIE BY 1150 PM EDT...
OXBOW AND CROTON HEIGHTS BY 1155 PM EDT...
MORLEY AND CANADIAN LAKES BY MIDNIGHT EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED.
&&
LAT...LON 4379 8601 4380 8510 4332 8536 4338 8638
4338 8639 4338 8644 4343 8645
TIME...MOT...LOC 0317Z 273DEG 39KT 4368 8595 4344 8628
$$
93The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 11:59 PM EDT | Special Marine Warning | GRR | 46 min | |
| Oct 24, 12:03 AM EDT | Special Weather Statement | GRR | Allegan, Barry, Ionia, Kent, Montcalm, Ottawa | 57 min |
| Oct 24, 12:08 AM EDT | Special Weather Statement | GRR | Isabella, Mecosta | 52 min |
| Oct 24, 12:38 AM EDT | Special Weather Statement | GRR | Barry, Clinton, Eaton, Gratiot, Ionia, Kent and 1 more | 52 min |
| Oct 24, 1:10 AM EDT | Special Weather Statement | GRR | Gratiot, Montcalm | 50 min |
| Oct 24, 1:41 AM EDT | Special Weather Statement | GRR | Clinton, Ingham | 64 min |
| Oct 24, 5:40 AM EDT | Small Craft Advisory | GRR | 14 hr |
Nearby
Special Weather Statements in Michigan, 2011Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.