Alert archive / Michigan / Flash Flood Warnings in 1996
Flash Flood Warning 14, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this flash flood warning at May 20, 1996, 7:52 PM EDT for Allegan County, Ottawa County, Michigan. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 20, 1996, 7:52 PM EDT (23:52 UTC)
- Expired
- May 21, 1996, 12:00 AM EDT
- In force
- 4 hr
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
Counties Allegan County, MI, Ottawa County, MI
The radar
The Grand Rapids radar (KGRR), 43 km from the middle of the area, began a volume at 23:55 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 12:00Z, 11.9 hours before the alert went out and 214 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
- 385 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 956 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 20, 5:06 PM EDT, 2 hours 46 minutes before
MIZ066-067-073-074-079>081-210100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 507 PM EDT MON MAY 20 1996 ...TORNADO THUNDERSTORM WATCH IN EFFECT UNTIL 1000 PM EDT FOR MOST OF SOUTH CENTRAL LOWER MICHIGAN... A TORNADO WATCH HAS BEEN ISSUED... AND IS IN EFFECT UNTIL 1000 PM EDT... FOR THE FOLLOWING COUNTIES IN SOUTH CENTRAL LOWER MICHIGAN: BRANCH... CALHOUN... EATON... HILLSDALE... INGHAM... JACKSON... AND ST JOSEPH. A FEW COMMUNITIES INCLUDED IN THE WATCH ARE BATTLE CREEK... JACKSON... LANSING... COLDWATER... AND HILLSDALE. AT 500 PM EDT... DOPPLER RADAR INDICATED AN AREA OF SHOWERS... WITH IMBEDDED THUNDERSTORMS... FROM LAKE MICHIGAN EAST-NORTHEAST THROUGH CENTRAL LOWER MICHIGAN. IN ADDITION... INDIVIDUAL THUNDERSTORMS WERE LOCATED SOUTH OF THIS... ACROSS SOUTHEAST LOWER MICHIGAN. ADDITIONAL THUNDERSTORMS COULD DEVELOP ACROSS THE WATCH AREA THIS EVENING... AND SOME OF THESE STORMS MAY BE SEVERE WITH THE POSSIBILITY OF TORNADOES. REMEMBER... A TORNADO WATCH MEANS TORNADOES ARE POSSIBLE IN AND NEAR THE WATCH AREA. BE ON THE WATCH FOR THREATENING WEATHER AND LISTEN TO NOAA WEATHER RADIO... COMMERCIAL RADIO OR TELEVISION FOR FURTHER INFORMATION. TRH
Special weather statement, May 20, 6:26 PM EDT, 1 hour 26 minutes before
MIZ066-067-073-074-079>081-210100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 628 PM EDT MON MAY 20 1996 ...TORNADO WATCH CANCELLED... THE TORNADO WATCH THAT WAS IN EFFECT FOR BRANCH... CALHOUN... EATON... HILLSDALE... INGHAM... JACKSON... AND ST JOSEPH COUNTIES HAS BEEN CANCELLED. AT 625 PM EDT... DOPPLER RADAR INDICATED AN AREA OF SHOWERS... WITH EMBEDDED THUNDERSTORMS... FROM LAKE MICHIGAN EAST-NORTHEAST THROUGH CENTRAL LOWER MICHIGAN. THE STRONG TO SEVERE THUNDERSTORMS THAT WERE OVER THE WATCH AREA HAVE MOVED OUT OF LOWER MICHIGAN... THEREFORE THE TORNADO WATCH HAS BEEN CANCELLED. ALTHOUGH THE WATCH HAS BEEN CANCELLED... ADDITIONAL THUNDERSTORMS COULD DEVELOP ACROSS THE AREA LATER THIS EVENING. STAY TUNNED TO NOAA WEATHER RADIO FOR FURTHER UPDATES. TRH
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 3:36 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton | 24 min |
| May 20, 3:54 PM EDT | Severe Thunderstorm Warning | GRR | Ingham, Jackson | 51 min |
| May 20, 4:25 PM EDT | Tornado Warning | GRR | Ingham, Jackson | 35 min |
Nearby
Flash Flood Warnings in Michigan, 1996Every flash flood warning in 1996
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.