Alert archive / Michigan / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 33, NWS Detroit, MI
NWS Detroit, MI issued this severe thunderstorm warning at Jun 15, 2001, 4:55 PM EDT for Livingston County, Michigan. It was in force for 65 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 15, 2001, 4:55 PM EDT (20:55 UTC)
- Expired
- Jun 15, 2001, 6:00 PM EDT
- In force
- 65 min
- Issued by
- NWS Detroit, MI
- Area
- Whole counties
County Livingston County, MI
The radar
The Detroit radar (KDTX), 38 km from the middle of the area, began a volume at 20:56 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 |
|---|---|---|---|
| Jun 15, 5:20 PM EDT | Thunderstorm Wind 54 E | Gregory, MI | Numerous trees were blown down. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 15, 4:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 8.9 hours before the alert went out and 41 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
- 784 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 997 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KDTX 152056 SVRDTX MIC093-152200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DETROIT-PONTIAC MI ISSUED BY NWS GRAND RAPIDS MI 455 PM EDT FRI JUN 15 2001 THE NATIONAL WEATHER SERVICE IN DETROIT-PONTIAC HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LIVINGSTON COUNTY IN MICHIGAN * UNTIL 600 PM EDT * AT 450 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES SOUTHWEST OF FOWLERVILLE...OR ABOUT 13 MILES SOUTHWEST OF HOWELL...MOVING NORTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... FOWLERVILLE AROUND 505 PM EDT HOWELL AROUND 515 PM EDT LARGE HAIL...DAMAGING WINDS...AND HEAVY RAIN ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 15, 3:15 PM EDT, 1 hour 40 minutes earlier.
Area forecast discussion, Jun 15, 3:15 PM EDT, 1 hour 40 minutes before
SOUTHEAST MICHIGAN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 315 PM EDT FRI JUN 15 2001 INGREDIENTS IN PLACE TO CONTINUE STRONG TO SEVERE THUNDERSTORMS INTO THE EVENING. IMPRESSIVE COUPLED 850/250 MB DIVERGENCE WILL CROSS CWA BETWEEN 21Z AND 05Z...COUPLED WITH EQUALLY IMPRESSIVE LOW LEVEL CONVERGENCE WILL YIELD SIGNIFICANT UVV/S. THERMODYNAMIC FORCING ALSO IMPRESSIVE WITH SHARP LOW LEVEL THETA-E RIDGE CROSSING CWA IN CONCERT WITH DYNAMIC FORCING. PLENTY OF INSTABILITY AVAILABLE AS WELL WITH MODIFIED 12Z DTX SOUNDING YIELDING CAPES IN 3 TO 4 KJ/KG RANGE. WITH WET BULB ZERO HEIGHTS RUNNING AROUND 12K FEET...MAIN THREAT LOOKS TO BE WIND AS NEAR UNIDIRECTIONAL WIND SPEED THROUGH THE COLUMN WITH MAX WINDS IN THE 35 TO 40 KNOT RANGE. WILL ALSO MONITOR RAINFALL. PWS EQUAL OR SLIGHTLY EXCEED 2 INCHES COINCIDENT WITH BEST LIFT. INDIVIDUAL STORMS HAVE BEEN MOVING AT NORTH AT 30 MPH. HOWEVER...LINE OF STORMS MOVING ONLY AT ABOUT 15 MPH. SO SOME AREAS COULD RECEIVE A GOOD DOUSING. DEEP MOISTURE AND LIFT WILL EXIT BETWEEN 10 PM AND 2 AM...WEST TO EAST...AND WITH IT THREAT OF SHRA AND TSRA. STRONG DNVA SETS IN DURING THE OVERNIGHT HOURS...LEADING TO CLEARING SKIES. BROAD SURFACE TROUGH SWINGS ACROSS CWA DURING THE DAY ON SATURDAY. BUT...WITH PLENTY OF DRY AIR IN PLACE...AND SURFACE RIDGE BUILDING IN WILL PRECLUDE ANYTHING MORE THAN SOME CIRRUS ACROSS THE NORTH AND CU EVERYWHERE /LOOKS TO BE NO MORE THAN SCT/. A POSSIBLE FLY IN THE OINTMENT FOR SATURDAY NIGHT IN THE SOUTHERN CWA. BOTH ETA AND AVN INDICATE AREA OF MODEST 850 THETA-E ADVECTION ACROSS SOUTHERN PART OF CWA. ETA IS FURTHER NORTH WITH THETA-E AXIS AND ALSO INDICATES SOME VERY WEAK SURFACE TROUGHINESS TO BOOT /AS DOES ETA-XX/. SOME INSTABILITY IN THE 500 J/KG NOTED BUT CINS RUNNING IN THE 50 TO 100 J/KG RANGE SHOULD PRECLUDE ANYTHING MORE THAN JUST AN INCREASE IN CLOUDS. SURFACE HIGH PRESSURE BUILDS IN FOR SUNDAY LEADING TO MOSTLY SUNNY SKIES. ALL AND ALL...A VERY NICE WEEKEND AFTER THE PREVIOUS SEVERAL. PREFER THE SLIGHTLY COOLER MAVS TO THE FWCS. EXTENDED... AS WAS THE CASE YESTERDAY...EXTENDED MODELS CONTINUE TO ADVERTISE A NEAR ZONAL FLOW REGIME. AND IS TYPICAL OF THIS SCENARIO...TIMING OF SYSTEMS BECOMES PROBLEMATIC. MODELS CONTINUE TO SUGGEST THAT MAIN FORECAST THROUGH THE EXTENDED WILL BE PRESENCE OF BAROCLINIC ZONE LURKING ABOUT. AS WAS THE CASE YESTERDAY...CONTINUED PRESENCE OF THE WARM/COLD FRONTS AND NEAR ZONAL FLOW WILL REQUIRE CONTINUED MENTION OF SHRA/TSRA FOR MOST OF THE EXTENDED. .DTX...NONE. OKEEFE
In the hours before
Special weather statement, Jun 15, 11:46 AM EDT, 5 hours 9 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-152100- SEVERE WEATHER OUTLOOK FOR SOUTHEAST LOWER MICHIGAN NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 1146 AM EDT FRI JUN 15 2001 ...SEVERE THUNDERSTORM WATCH 433 HAS BEEN ISSUED FOR PART OF SOUTHEAST MICHIGAN... DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SEVERE THUNDERSTORM WATCH 433 HAS BEEN ISSUED FOR PART OF SOUTHEAST MICHIGAN...INCLUDING BAY...MIDLAND...SAGINAW...AND SHIAWASSEE COUNTIES. THIS WATCH IS IN EFFECT UNTIL 5 PM...AND ALSO INCLUDES THE COMMUNITIES OF BAY CITY...MIDLAND...SAGINAW...AND OWOSSO. SPOTTER ACTIVATION HAS BEEN REQUESTED. SCATTERED THUNDERSTORMS WILL OCCUR ACROSS SOUTHEAST MICHIGAN THIS AFTERNOON AND TONIGHT...UNTIL PAST MIDNIGHT. SOME OF THESE STORMS COULD BE SEVERE. A COLD FRONT IN THE VICINITY OF LAKE MICHIGAN WILL PROGRESS EAST AND PASS ACROSS SOUTHEAST MICHIGAN THIS EVENING. A VERY UNSTABLE AIR MASS WILL REACT WITH THIS APPROACHING COLD FRONT TO GENERATE SCATTERED SHOWERS AND THUNDERSTORMS THIS AFTERNOON...BECOMING MORE NUMEROUS TOWARD EVENING. MANY OF THESE STORMS WILL PRODUCE WIND GUSTS OF 30 TO 40 MPH...AND A FEW STORMS COULD PRODUCE GUSTS TO 60 MPH. ISOLATED HAIL OF THREE QUARTER INCH DIAMETER IS ALSO POSSIBLE. STORM MOVEMENT WILL BE TOWARD THE NORTHEAST AROUND 25 MPH. THE GREATEST THREAT OF SEVERE WEATHER WILL BE UNTIL 9 PM THIS EVENING...AFTER WHICH TIME FRONTAL PASSAGE WILL RESULT IN ANY REMAINING STORMS BEING OF LESSENING STRENGTH. STAY TUNED TO YOUR FAVORITE MEDIA OUTLET FOR THE LATEST WEATHER INFORMATION...FROM YOUR NATIONAL WEATHER SERVICE. DWD DJF
Special weather statement, Jun 15, 2:45 PM EDT, 2 hours 10 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-152100- SEVERE WEATHER OUTLOOK FOR SOUTHEAST LOWER MICHIGAN NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 245 PM EDT FRI JUN 15 2001 ...SEVERE THUNDERSTORM WATCH 433 CONTINUES UNTIL 5 PM FOR PART OF SOUTHEAST MICHIGAN... DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SEVERE THUNDERSTORM WATCH 433 REMAINS IN EFFECT FOR PART OF SOUTHEAST MICHIGAN...INCLUDING BAY...MIDLAND...SAGINAW...AND SHIAWASSEE COUNTIES. THIS WATCH IS IN EFFECT UNTIL 5 PM...AND ALSO INCLUDES THE COMMUNITIES OF BAY CITY...MIDLAND...SAGINAW...AND OWOSSO. SPOTTER ACTIVATION HAS TAKEN PLACE. SHOWERS AND SCATTERED THUNDERSTORMS WILL MOVE FROM A HARRISON TO THREE RIVERS LINE...EAST TO A BAY CITY TO ADRIAN LINE...BY 430 PM. LATER...SHOWERS AND SCATTERED THUNDERSTORMS SHOULD REACH A BAD AXE TO MONROE LINE BY 630 PM. SOME THUNDERSTORMS COULD BECOME SEVERE... WITH WIND GUSTS TO 60 MPH AND ISOLATED HAIL OF THREE QUARTER INCH IN DIAMETER. DUE TO THE HIGH AMOUNT OF MOISTURE IN THE AIR...HEAVY RAINFALL IS LIKELY WITH ANY THUNDERSTORM. OVER AN INCH OF RAIN COULD OCCUR IN A VERY SHORT PERIOD OF TIME...WHICH COULD PRODUCE PONDING OF WATER ON ROADS AND LOW VISIBILITY FOR MOTORISTS. DRIVERS SHOULD EXERCISE CAUTION IF TRAVEL IS PLANNED DURING THE EVENING RUSH HOUR. A COLD FRONT IN THE VICINITY OF LAKE MICHIGAN WILL PROGRESS EAST AND PASS ACROSS SOUTHEAST MICHIGAN THIS EVENING. THE GREATEST THREAT OF SEVERE WEATHER WILL BE UNTIL 9 PM THIS EVENING...AFTER WHICH TIME FRONTAL PASSAGE WILL RESULT IN ANY REMAINING STORMS BEING OF LESSENING STRENGTH. STAY TUNED TO YOUR FAVORITE MEDIA OUTLET FOR THE LATEST WEATHER INFORMATION FROM YOUR NATIONAL WEATHER SERVICE. DJF
Special weather statement, Jun 15, 3:45 PM EDT, 1 hour 10 minutes before
MIZ047>049-053>055-060>063-068>070-075-076-082-083-160100- SEVERE WEATHER OUTLOOK FOR SOUTHEAST LOWER MICHIGAN NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 345 PM EDT FRI JUN 15 2001 ...SEVERE THUNDERSTORM WATCH 435 HAS BEEN ISSUED FOR MOST OF SOUTHEAST MICHIGAN UNTIL 9 PM... ...SEVERE THUNDERSTORM WATCH 433 REMAINS IN EFFECT FOR MIDLAND COUNTY UNTIL 5 PM... DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY. SEVERE THUNDERSTORM WATCH 435 HAS BEEN ISSUED FOR MOST OF SOUTHEAST MICHIGAN. THIS WATCH INCLUDES THE FOLLOWING COUNTIES... BAY... TUSCOLA... HURON... SANILAC... SAGINAW... GENESEE... LAPEER... SHIAWASSEE... ST CLAIR... LIVINGSTON... OAKLAND... MACOMB... WASHTENAW... WAYNE... LENAWEE... AND MONROE. THIS INCLUDES THE COMMUNITIES OF BAY CITY...SAGINAW...BAD AXE...FLINT...PONTIAC...DETROIT...ANN ARBOR...AND MONROE. THIS WATCH EXTENDS THE PREVIOUS SEVERE THUNDERSTORM WATCH FOR BAY... SAGINAW...AND SHIAWASSEE COUNTIES. SEVERE THUNDERSTORM WATCH 433 REMAINS IN EFFECT FOR MIDLAND COUNTY... INCLUDING THE CITY OF MIDLAND...UNTIL 5 PM. SPOTTER ACTIVATION HAS BEEN REQUESTED. THUNDERSTORMS WILL OCCUR ACROSS SOUTHEAST MICHIGAN THIS EVENING. SOME OF THESE STORMS COULD BE SEVERE. A COLD FRONT IN WESTERN LOWER MICHIGAN WILL PASS ACROSS SOUTHEAST MICHIGAN THIS EVENING. A VERY UNSTABLE AIR MASS WILL REACT WITH THIS APPROACHING COLD FRONT TO GENERATE THUNDERSTORMS THIS EVENING. MANY OF THESE STORMS WILL PRODUCE WIND GUSTS OF 30 TO 40 MPH...AND A FEW STORMS COULD PRODUCE GUSTS TO 60 MPH. ISOLATED HAIL OF THREE QUARTER INCH DIAMETER IS ALSO POSSIBLE. STORM MOVEMENT WILL BE TOWARD THE NORTHEAST AROUND 25 MPH. THE GREATEST THREAT OF SEVERE WEATHER WILL BE UNTIL 9 PM THIS EVENING...AFTER WHICH TIME FRONTAL PASSAGE WILL RESULT IN ANY REMAINING STORMS BEING OF LESSENING STRENGTH. STAY TUNEDK TO YOUR FAVORITE MEDIA OUTLET FOR THE LATEST WEATHER INFORMATION...FROM YOUR NATIONAL WEATHER SERVICE. DJF
The office that day
Everything else NWS Detroit, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 5:27 PM EDT | Severe Thunderstorm Warning | DTX | Washtenaw | 48 min |
| Jun 15, 5:30 PM EDT | Severe Thunderstorm Warning | DTX | Genesee | 60 min |
| Jun 15, 5:34 PM EDT | Severe Thunderstorm Warning | DTX | Tuscola | 41 min |
| Jun 15, 5:47 PM EDT | Severe Thunderstorm Warning | DTX | Oakland | 43 min |
| Jun 15, 6:08 PM EDT | Severe Thunderstorm Warning | DTX | Wayne | 37 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.