Alert archive / Michigan / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 20, NWS Marquette, MI

June 19, 2001Schoolcraft County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Jun 19, 2001, 1:01 AM EDT for Schoolcraft County, Michigan. It was in force for 44 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 19, 2001, 1:01 AM EDT (05:01 UTC)
Expired: Jun 19, 2001, 1:45 AM EDT
In force: 44 min
Issued by: NWS Marquette, MI
Area: Whole counties

County Schoolcraft County, MI

The radar

The Marquette radar (KMQT), 119 km from the middle of the area, began a volume at 04:49 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 19, 1:21 AM EDT	Hail 0.75	Cooks, MI	Dime sized hail

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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 5.0 hours before the alert went out and 230 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 795 J/kg
Mixed-layer CIN: -280 J/kg
Mixed-layer LCL: 1264 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 394 m²/s²
0-3 km storm-relative helicity: 534 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Marquette, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 18, 10:10 PM EDT, 2 hours 51 minutes earlier.

Area forecast discussion, Jun 18, 10:10 PM EDT, 2 hours 51 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MARQUETTE MI
1010 PM EDT MON JUN 18 2001

SHRA/TSRA TONIGHT AND SEVERE POTENTIAL ARE PRIMARY CONCERNS

WV IMAGERY AND RUC40 SHOWING SHRTWV STRETCHING FM NE SD TO LAKE
WINNEPEG. THIS WAS BEING PUSHED ALONG WITH A STRONG 105KT ULJ OVR
NRN CONUS. SFC ANLYS SHOWING LOW OVR MN SPLITTING. NRN PART OVR
INL...WHILE THE SRN PART WAS OVR JUST E OF MSP.

RUC PROJECTING THE SRN LOW TO SHIFT INTO WRN UP BY 06Z. SHRTWV WILL
REACH WRN UP BY 12Z. A WAVE IS SHOWING UP IN THE 310K ISENTROPIC
ANLYS OVR WRN UP. THIS SHOULD ENHANCE POTENTIAL FOR TRIGGERING TSRA
LATE THIS EVENING. SFC-H85 Q-VEC ANLYS ALSO SHOWING GREATEST
CONVERGENCE OVR SLIDING OVR FA OVRNGT. LI'S ARE XPCT TO DROP OFF TO
-5 BY  09Z. SBCAPE VALUES ARE XPCT TO XCEED 2500J/KG BY 09Z OVR FA
PER RUC. LATEST RUC SOUNDING DATA FOR UP SHOWING A LTL MORE MSTR
THAN EARLIER FCST IN LLVLS. ALREADY SVR TSRA DVLPG OVR ERN MNf AND
NRN WI. POTENTIAL IS HI FOR POSSIBLE SVR TSRA AND/OR TOR XPCTD
OVRNGT. LOOKING AT THE RUC'S THETA-E RIDGE PATTERN...IT APPEARS THE
STRONGEST ACTIVITIES WILL BE OVR THE SRN UP.

.MQT...TORNADO WATHCH MIZ002>004-009-010.

DLG

In the hours before

Special weather statement, Jun 18, 10:29 PM EDT, 2 hours 32 minutes before

MIZ002>004-009-010-190700-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MARQUETTE MI
1029 PM EDT MON JUN 18 2001

...TORNADO WATCH NUMBER 451 IN EFFECT UNTIL 300 AM EDT (200 AM
CDT)...

A TORNADO WATCH IS IN EFFECT FOR GOGEBIC...ONTONAGON...
HOUGHTON...BARAGA AND IRON COUNTIES UNTIL 300 AM EDT (200 AM CDT).
THIS WOULD INCLUDE THE CITIES OF IRONWOOD...ONTONAGON...IRON RIVER...
CRYSTAL FALLS...LANSE...HOUGHTON AND HANCOCK.

THUNDERSTORMS THAT ARE SEVERE HAVE BEEN ONGOING ACROSS NORTHWEST AND
CENTRAL WISCONSIN AND ARE MOVING NORTHEAST AT 45 MPH. THE
THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE UPPER PENINSULA OF
MICHIGAN AFTER 1000 PM CDT (1100 PM EDT) WITH LARGE HAIL...ISOLATED
TORNADOES AND STRONG WIND OF 70 MPH OR GREATER POSSIBLE. SOME
OF THE THUNDERSTORMS IN NORTHWESTERN WISCONSIN HAVE PRODUCED
TORNADOES THIS EVENING.

PERSONS IN GOGEBIC...ONTONAGON...HOUGHTON...BARAGA AND IRON COUNTIES
ARE URGED TO LISTEN FOR LATER WEATHER STATEMENTS...FORECAST UPDATES
AND POSSIBLE WARNINGS USING NOAA WEATHER RADIO OR THEIR FAVORITE
MEDIA OUTLET.

MICHELS

Local storm report, Jun 19, 12:38 AM EDT, 23 minutes before

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The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 18, 10:55 PM EDT	Severe Thunderstorm Warning	MQT	Gogebic	50 min
Jun 18, 11:14 PM EDT	Severe Thunderstorm Warning	MQT	Ontonagon	46 min
Jun 18, 11:55 PM EDT	Severe Thunderstorm Warning	MQT	Houghton	35 min
Jun 19, 12:19 AM EDT	Tornado Warning	MQT	Houghton	26 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2001 Every 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.