Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 281, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 18, 1998, 10:06 PM CDT for Brown County, Watonwan County, Minnesota. It was in force for 49 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
- Jul 18, 1998, 10:06 PM CDT (03:06 UTC)
- Expired
- Jul 18, 1998, 10:55 PM CDT
- In force
- 49 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Brown County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 120 km from the middle of the area, began a volume at 03:09 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 |
|---|---|---|---|
| Jul 18, 10:50 PM CDT | Thunderstorm Wind 50 | Lewisville, MN | Trees blown down. Estimated windspeed. |
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 |
|---|---|---|---|
| Jul 18, 8:45 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 3.1 hours before the alert went out and 118 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
- 16 J/kg
- Mixed-layer CIN
- -548 J/kg
- Mixed-layer LCL
- 2130 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- -72 m²/s²
- 0-3 km storm-relative helicity
- 450 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMSP 190307
SVRMSP
MNC015-165-190355-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1006 PM CDT SAT JUL 18 1998
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
BROWN COUNTY IN SOUTH CENTRAL MINNESOTA
WATONWAN COUNTY IN SOUTH CENTRAL MINNESOTA
* UNTIL 1055 PM CDT
* AT 1005 PM CDT...DOPPLER RADAR INDICATED A SEVERE STORM 5 MILES
SOUTH OF REDWOOD FALLS. THE STORM WAS MOVING EAST AT 45 MPH.
* SOME LOCATIONS AFFECTED
SPRINFIELD
SLEEPY EYE
COMFREY
ST. JAMES
LA SALLE
THIS IS A DANGEROUS STORM...WITH DAMAGING WINDS. STAY INDOORS
AWAY FROM WINDOWS. ESTIMATED WINDS OF OVER 60 MPH WERE REPORTED BY
THE PUBLIC IN WABASSO AND WALNUT GROVE IN REDWOOD COUNTY SHORTLY
AFTER 10 PM CDT
A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES.
EDWARDS
&The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 9:05 PM CDT | Tornado Warning | MPX | Stevens | 60 min |
| Jul 18, 9:47 PM CDT | Severe Thunderstorm Warning | MPX | Redwood | 33 min |
| Jul 18, 10:03 PM CDT | Severe Thunderstorm Warning | MPX | Stevens, Swift | 62 min |
| Jul 18, 11:09 PM CDT | Severe Thunderstorm Warning | MPX | Faribault | 46 min |
| Jul 18, 11:25 PM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Rice, Waseca | 50 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.