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 Aug 9, 2011, 3:21 AM EDT for Ingham County, Jackson County, Michigan. It was in force for 84 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
- Aug 9, 2011, 3:21 AM EDT (07:21 UTC)
- Expired
- Aug 9, 2011, 4:45 AM EDT
- In force
- 84 min
- Issued by
- NWS Grand Rapids, MI
Counties Ingham County, MI, Jackson County, MI
The radar
The Detroit radar (KDTX), 84 km from the middle of the area, began a volume at 07:25 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
Detroit, MI (KDTX), launched 00:00Z, 7.4 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.
- Mixed-layer CAPE
- 235 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1099 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
595
WWUS83 KGRR 090721
SPSGRR
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
321 AM EDT TUE AUG 9 2011
MIZ067-074-090845-
INGHAM-JACKSON-
321 AM EDT TUE AUG 9 2011
...SIGNIFICANT WEATHER ADVISORY...
AT 317 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES SOUTH OF
LANSING TO 14 MILES WEST OF JACKSON...MOVING EAST AT 15 MPH.
WINDS GREATER THAN 30 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...
BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
EAST LANSING... TOMPKINS... PARMA...
HANOVER... OKEMOS... MASON...
SPRING ARBOR... HORTON... EDEN...
HASLETT... SANDSTONE... RIVES JUNCTION...
LESLIE... WHEATFIELD TWP... LIBERTY TWP...
JACKSON...
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 4207 8414 4207 8470 4242 8472 4242 8460
4277 8460 4278 8416 4239 8412 4208 8412
TIME...MOT...LOC 0720Z 258DEG 12KT 4263 8448 4220 8465
$$
MEADEThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 12:04 AM EDT | Areal Flood Advisory | GRR | Kent, Montcalm | 10 hr |
| Aug 9, 3:04 AM EDT | Special Weather Statement | GRR | Clinton | 56 min |
| Aug 9, 4:31 AM EDT | Small Craft Advisory | GRR | 45 hr | |
| Aug 9, 5:10 AM EDT | Dense Fog Advisory | GRR | Allegan, Barry, Calhoun, Clare, Clinton, Eaton and 17 more | 4 hr |
| Aug 9, 10:56 AM EDT | Special Weather Statement | GRR | Lake, Mason, Osceola | 64 min |
| Aug 9, 11:43 AM EDT | Special Weather Statement | GRR | Clare, Isabella, Lake, Mecosta, Newaygo, Osceola | 2 hr |
| Aug 9, 1:10 PM EDT | Special Weather Statement | GRR | Clare, Isabella, Mecosta | 95 min |
| Aug 9, 2:39 PM EDT | Special Weather Statement | GRR | Ingham | 51 min |
| Aug 9, 3:06 PM EDT | Special Weather Statement | GRR | Kalamazoo | 54 min |
| Aug 9, 4:13 PM EDT | Special Weather Statement | GRR | Jackson | 32 min |
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.