Alert archive / Michigan / Tornado Warnings in 2009
Tornado Warning 2, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this tornado warning at Aug 9, 2009, 8:11 PM EDT for Jackson 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
- Aug 9, 2009, 8:11 PM EDT (00:11 UTC)
- Expired
- Aug 9, 2009, 8:41 PM EDT
- In force
- 30 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
County Jackson County, MI
The radar
The Detroit radar (KDTX), 85 km from the middle of the area, began a volume at 00:13 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 |
|---|---|---|---|
| Aug 9, 8:25 PM EDT | HAIL 0.7 | 3 Se Rives Junction, MI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 9, 5:48 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 00:00Z, 0.2 hours before the alert went out and 89 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
- 2205 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1419 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 145 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 7.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KGRR 100011 TORGRR MIC075-100100- /O.NEW.KGRR.TO.W.0002.090810T0011Z-090810T0100Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GRAND RAPIDS MI 811 PM EDT SUN AUG 9 2009 THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A * TORNADO WARNING FOR... JACKSON COUNTY IN SOUTH CENTRAL MICHIGAN * UNTIL 900 PM EDT * AT 809 PM EDT...DOPPLER RADAR INDICATED A TORNADO. THIS TORNADO WAS LOCATED 4 MILES NORTHEAST OF SANDSTONE...AND MOVING EAST AT 35 MPH. * THIS TORNADO WILL BE NEAR... GRASS LAKE BY 835 PM EDT... FRANCISCO BY 840 PM EDT... JACKSON BY 840 PM EDT... IN ADDITION TO THE TORNADO THREAT...VERY LARGE HAIL AND DAMAGING WINDS OVER 75 MPH CAN ALSO BE EXPECTED IN THE FOLLOWING LOCATIONS... BERRYVILLE... MINARD MILL... SANDSTONE... RIVES JUNCTION... SPRING ARBOR... JACKSON... VANDERCOOK LAKE... PLEASANT LAKE... ACKERSON LAKE... MUNITH... LEONI... MICHIGAN CENTER... NAPOLEON ARPT... NAPOLEON... GRASS LAKE... TRIST... WATERLOO TWP... NORVELL... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT MONDAY MORNING FOR SOUTHWESTERN MICHIGAN. && LAT...LON 4208 8413 4221 8459 4242 8452 4242 8413 TIME...MOT...LOC 0011Z 274DEG 29KT 4230 8444 $$ MJS
2 follow-up statements
000 WWUS53 KGRR 100025 SVSGRR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 825 PM EDT SUN AUG 9 2009 MIC075-100100- /O.CON.KGRR.TO.W.0002.000000T0000Z-090810T0100Z/ JACKSON MI- 825 PM EDT SUN AUG 9 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM EDT FOR NORTHEASTERN JACKSON COUNTY... AT 823 PM EDT...DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED 5 MILES SOUTH OF MUNITH...AND MOVING EAST AT 40 MPH. * THIS TORNADO WILL BE NEAR... TRIST BY 825 PM EDT... WATERLOO BY 830 PM EDT... IN ADDITION TO THE TORNADO THREAT...LARGE HAIL AND DAMAGING WINDS OVER 60 MPH CAN ALSO BE EXPECTED IN THE FOLLOWING LOCATIONS... PLEASANT LAKE... LEONI... MUNITH... GRASS LAKE... TRIST... WATERLOO TWP... WATERLOO... FRANCISCO... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT MONDAY MORNING FOR SOUTHWESTERN MICHIGAN. && LAT...LON 4221 8414 4227 8443 4240 8443 4242 8413 TIME...MOT...LOC 0025Z 274DEG 35KT 4232 8423 $$ LAURENS
000 WWUS53 KGRR 100041 SVSGRR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 841 PM EDT SUN AUG 9 2009 MIC075-100052- /O.CAN.KGRR.TO.W.0002.000000T0000Z-090810T0100Z/ JACKSON MI- 841 PM EDT SUN AUG 9 2009 ...THE TORNADO WARNING FOR NORTHEASTERN JACKSON COUNTY HAS BEEN CANCELLED... SEVERE WEATHER HAD EITHER WEAKENED OR MOVED OUT OF THE AREA. STAY TUNED FOR THE LATEST WEATHER INFORMATION. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 100 AM EDT MONDAY MORNING FOR SOUTHWESTERN MICHIGAN. LAT...LON 4221 8414 4227 8443 4240 8443 4242 8413 TIME...MOT...LOC 0042Z 274DEG 35KT 4219 8402 $$ LAURENS
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 8:23 PM EDT | Severe Thunderstorm Warning | GRR | Ingham, Jackson | 26 min |
| Aug 10, 12:50 AM EDT | Special Weather Statement | GRR | Ionia, Kent, Ottawa | 55 min |
| Aug 10, 1:37 AM EDT | Areal Flood Advisory | GRR | Allegan, Barry, Clinton, Eaton, Ingham, Ionia and 2 more | 7 hr |
| Aug 10, 1:58 AM EDT | Special Weather Statement | GRR | Barry, Clinton, Eaton, Gratiot, Ingham, Ionia and 4 more | 92 min |
| Aug 10, 3:51 AM EDT | Special Weather Statement | GRR | Barry, Clinton, Eaton, Gratiot, Ingham, Ionia and 2 more | 84 min |
Nearby
Tornado Warnings in Michigan, 2009Every tornado warning in 2009Tornadoes in 2009
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.