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 Jul 18, 2011, 11:32 PM EDT for Calhoun County, Kalamazoo County, Van Buren County, Michigan. It was in force for 118 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 18, 2011, 11:32 PM EDT (03:32 UTC)
- Expired
- Jul 19, 2011, 1:30 AM EDT
- In force
- 118 min
- Issued by
- NWS Grand Rapids, MI
Counties Calhoun County, MI, Kalamazoo County, MI, Van Buren County, MI
The radar
The Grand Rapids radar (KGRR), 77 km from the middle of the area, began a volume at 03:34 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 19, 12:16 AM EDT | HAIL 0.25 | Vicksburg, MI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 3.5 hours before the alert went out and 193 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
- 1993 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 1085 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 182 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 2.1
- Supercell composite
- 12.7
The text
As transmitted, in the capitals the NWS used until 2016.
953
WWUS83 KGRR 190332
SPSGRR
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1132 PM EDT MON JUL 18 2011
MIZ071>074-190530-
CALHOUN-JACKSON-KALAMAZOO-VAN BUREN-
1132 PM EDT MON JUL 18 2011
...SIGNIFICANT WEATHER ADVISORY...
AT 1129 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM SOUTH HAVEN TO
BATTLE CREEK...MOVING SOUTHEAST AT 20 MPH.
WINDS GREATER THAN 30 MPH...FREQUENT CLOUD TO GROUND LIGHTNING...
BRIEF HEAVY DOWNPOURS...ARE POSSIBLE WITH THESE STORMS. LOCALLY
MORE THAN AN INCH OF RAIN COULD ACCOMPANY THE PASSAGE OF THESE
STORMS.
* THUNDERSTORMS WILL BE NEAR...
MENTHA AND NORTHWOOD BY 1140 PM EDT...
WATTLES PARK BY 1145 PM EDT...
BEADLE LAKE BY 1150 PM EDT...
COMSTOCK BY 1155 PM EDT...
PARTELLO AND ARMSTRONG CORNERS BY MIDNIGHT EDT...
TOQUIN AND DUCK LAKE BY 1205 AM EDT...
RICE CREEK AND ALMENA BY 1210 AM 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 4207 8622 4224 8622 4225 8636 4242 8628
4242 8472 4211 8471 4207 8466
TIME...MOT...LOC 0332Z 311DEG 18KT 4241 8634 4233 8516
$$
MJSThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 11:51 PM EDT | Special Marine Warning | GRR | 39 min | |
| Jul 18, 11:59 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Kalamazoo, Van Buren | 69 min |
| Jul 19, 1:13 AM EDT | Special Weather Statement | GRR | Barry | 62 min |
| Jul 19, 1:16 AM EDT | Special Weather Statement | GRR | Van Buren | 44 min |
| Jul 19, 1:33 AM EDT | Areal Flood Advisory | GRR | Van Buren | 5 hr |
| Jul 19, 4:00 AM EDT | Excessive Heat Warning | GRR | Allegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 13 more | 65 hr |
| Jul 19, 4:00 AM EDT | Heat Advisory | GRR | Clare, Gratiot, Isabella, Lake, Mason, Mecosta and 5 more | 16 hr |
| Jul 19, 4:12 PM EDT | Small Craft Advisory | GRR | 43 hr | |
| Jul 19, 4:30 PM EDT | Excessive Heat Watch | GRR | Clare, Gratiot, Isabella, Lake, Mason, Mecosta and 5 more | 11 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.