Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 312, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 23, 1998, 4:10 AM CDT for Yellow Medicine County, Minnesota. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 23, 1998, 4:10 AM CDT (09:10 UTC)
- Expired
- Aug 23, 1998, 4:45 AM CDT
- In force
- 35 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Yellow Medicine County, MN
The radar
The Sioux Falls radar (KFSD), 143 km from the middle of the area, began a volume at 09:10 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
Minneapolis, MN (KMPX), launched 00:00Z, 9.2 hours before the alert went out and 180 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
- 2973 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 255 m²/s²
- 0-3 km storm-relative helicity
- 351 m²/s²
- Significant tornado parameter
- 4.3
- Supercell composite
- 21.4
The text
As transmitted, in the capitals the NWS used until 2016.
911
WUUS1 KMSP 230912 RRA
SVRMSP
MNC173-230945-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
410 AM CDT SUN AUG 23 1998
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN YELLOW MEDICINE COUNTY IN SOUTHWESTERN MINNESOTA
* UNTIL 445 AM CDT
* AT 410 AM CDT...DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
HAIL AND DAMAGING WINDS ABOUT 5 MILES NORTHWEST OF GRANITE FALLS.
THE STORM WAS MOVING EAST SOUTHEAST AT 50 MPH.
* SOME LOCATIONS AFFECTED
GRANITE FALLS
THIS IS A DANGEROUS STORM. STAY INDOORS AWAY FROM WINDOWS.
JJWhat 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.
In the hours before
Local storm report, Aug 22, 11:22 PM CDT, 4 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MINNESOTA
1122 PM CDT SAT AUG 22 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0753 PM CHANHASSEN MN .75 INCH HAIL
08/22/98 CARVER
0808 PM SAVAGE MN TORNADO
08/22/98 SCOTT
0815 PM SAVAGE MN 60 MPH TSTM GUST
08/22/98 SCOTT
0825 PM BLOOMINGTON MN WIND DAMAGE
08/22/98 HENNEPIN 8 INCH BRANCHES DOWN
0922 PM SHAKOPEE MN 1 INCH HAIL
08/22/98 SCOTT
0922 PM SHAKOPEE MN 60 MPH TSTM GUST
08/22/98 SCOTT
RJNLocal storm report, Aug 22, 11:22 PM CDT, 4 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MINNESOTA
1122 PM CDT SAT AUG 22 1998
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0753 PM CHANHASSEN MN .75 INCH HAIL
08/22/98 CARVER
0808 PM SAVAGE MN TORNADO
08/22/98 SCOTT
0815 PM SAVAGE MN 60 MPH TSTM GUST
08/22/98 SCOTT
0825 PM BLOOMINGTON MN WIND DAMAGE
08/22/98 HENNEPIN 8 INCH BRANCHES DOWN
0922 PM SHAKOPEE MN 1 INCH HAIL
08/22/98 SCOTT
0922 PM SHAKOPEE MN 60 MPH TSTM GUST
08/22/98 SCOTT
RJNSpecial weather statement, Aug 22, 11:50 PM CDT, 4 hours 20 minutes before
MNZ049>053-058>063-066>070-074>079-082>088-091>096-230700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1150 PM CDT SAT AUG 22 1998 THE TORNADO WATCH THAT WAS IN EFFECT UNTIL 1 AM FOR SOUTHEAST MINNESOTA HAS BEEN CANCELLED. SCATTERED SHOWERS AND THUNDERSTORM WILL CONTINUE OVER PARTS OF SOUTHEAST AND EAST CENTRAL MINNESOTA UNTIL AFTER MIDNIGHT. HOWEVER STORMS ARE NO LONGER EXPECTED TO BE SEVERE. SCOTT
Special weather statement, Aug 22, 11:50 PM CDT, 4 hours 20 minutes before
MNZ049>053-058>063-066>070-074>079-082>088-091>096-230700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1150 PM CDT SAT AUG 22 1998 THE TORNADO WATCH THAT WAS IN EFFECT UNTIL 1 AM FOR SOUTHEAST MINNESOTA HAS BEEN CANCELLED. SCATTERED SHOWERS AND THUNDERSTORM WILL CONTINUE OVER PARTS OF SOUTHEAST AND EAST CENTRAL MINNESOTA UNTIL AFTER MIDNIGHT. HOWEVER STORMS ARE NO LONGER EXPECTED TO BE SEVERE. SCOTT
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 7:30 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 65 min |
| Aug 22, 7:57 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Scott | 63 min |
| Aug 22, 8:10 PM CDT | Tornado Warning | MPX | Dakota, Scott | 30 min |
| Aug 22, 8:35 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Ramsey, Washington | 45 min |
| Aug 22, 8:35 PM CDT | Severe Thunderstorm Warning | MPX | Carver | 45 min |
| Aug 22, 8:40 PM CDT | Tornado Warning | MPX | Dakota | 65 min |
| Aug 22, 9:14 PM CDT | Flash Flood Warning | MPX | Carver, Dakota, Hennepin, Scott | 2 hr |
| Aug 22, 9:19 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 51 min |
| Aug 22, 9:27 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Scott | 63 min |
| Aug 22, 9:51 PM CDT | Flash Flood Warning | MPX | Scott | 69 min |
| Aug 23, 3:15 AM CDT | Severe Thunderstorm Warning | MPX | Lac qui Parle | 45 min |
| Aug 23, 3:33 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Swift | 42 min |
| Aug 23, 4:07 AM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 58 min |
| Aug 23, 4:14 AM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Swift | 16 min |
| Aug 23, 4:40 AM CDT | Severe Thunderstorm Warning | MPX | Meeker | 60 min |
| Aug 23, 5:02 AM CDT | Severe Thunderstorm Warning | MPX | Wright | 43 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1998Every severe thunderstorm warning in 1998
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.