Alert archive / Minnesota / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 30, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 23, 1993, 8:20 PM CDT for Chisago County, Washington County, Minnesota. It was in force for 40 min.
The area
The counties it named.
The facts
- Issued
- Jun 23, 1993, 8:20 PM CDT (01:20 UTC)
- Expired
- Jun 23, 1993, 9:00 PM CDT
- In force
- 40 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
Counties Chisago County, MN, Washington County, MN
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 1.3 hours before the alert went out and 72 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
- 508 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 778 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 152 m²/s²
- 0-3 km storm-relative helicity
- 190 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS1 KMSP 240120 SVRMPX MNC025-163-240200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MINNEAPOLIS MN 820 PM CDT WED JUN 23 1993 THE NATIONAL WEATHER SERVICE IN MINNEAPOLIS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL MINNESOTA ...CHISAGO COUNTY...NORTHERN WASHINGTON COUNTY AT 815 PM...RADAR INDICATED A SEVERE THUNDERSTORM NEAR ROSEVILLE AND WHITE BEAR LAKE IN RAMSEY COUNTY AND OVER CENTERVILLE IN ANOKA COUNTY IN THE TWIN CITIES METRO AREA OF EAST CENTRAL MINNESOTA. DAMAGING WINDS AND EXTREMELY HEAVY RAIN HAVE BEEN REPORTED WITH THIS STORM. MOVEMENT WAS TO THE NORTHEAST AT 35 MILES AN HOUR. CITIES AND TOWNS INCLUDED IN THE WARNING ARE FOREST LAKE...SCANDIA...WYOMING...CHISAGO CITY...CENTER CITY AND TAYLORS FALLS. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...LARGE HAIL... DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM. PEOPLE IN MOBILE HOMES SHOULD GO TO A STORM SHELTER.
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.
In the hours before
Special weather statement, Jun 23, 5:35 PM CDT, 2 hours 45 minutes before
MNZ014-O12-232330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 535 PM CDT WED JUN 23 1993 ...INTENSE AMOUNTS OF RAINFALL ACROSS CENTRAL MINNESOTA... THE LINE OF THUNDERSTORMS THAT MOVED THROUGH CENTRAL MINNESOTA THIS AFTERNOON DROPPED HEAVY AMOUNTS OF RAIN. SOME AREAS RECEIVED OVER AN INCH PER HOUR. THE FOLLOWING ARE UNOFFICIAL RAINFALL AMOUNTS SINCE 2 PM... SARTELL MN 3.58 RUM RIVER STORE(10 NE FOLEY MN) 2.00 ST CLOUD MN 3.15+ LITTLE FALLS MN .62 FOLEY MN .75 HARDING MN(25 SE BRAINERD MN) .96 COLD SPRING MN .81 MCBEATH PETERS
Special weather statement, Jun 23, 5:37 PM CDT, 2 hours 43 minutes before
MNZ014-O12-232330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST CLOUD MINNESOTA 535 PM CDT WED JUN 23 1993 ...INTENSE AMOUNTS OF RAINFALL ACROSS CENTRAL MINNESOTA... THE LINE OF THUNDERSTORMS THAT MOVED THROUGH CENTRAL MINNESOTA THIS AFTERNOON DROPPED HEAVY AMOUNTS OF RAIN. SOME AREAS RECEIVED OVER AN INCH PER HOUR. THE FOLLOWING ARE UNOFFICIAL RAINFALL AMOUNTS SINCE 2 PM... SARTELL MN 3.58 RUM RIVER STORE(10 NE FOLEY MN) 2.00 ST CLOUD MN 3.15+ LITTLE FALLS MN .62 FOLEY MN .75 HARDING MN(25 SE BRAINERD MN) .96 COLD SPRING MN .81 MCBEATH PETERS
Special weather statement, Jun 23, 5:47 PM CDT, 2 hours 33 minutes before
WIZ003-006-MNZALL-232345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 550 PM CDT WED JUN 23 1993 ...STRONG THUNDERSTORMS ACROSS EAST CENTRAL MINNESOTA... STRONG THUNDERSTORMS WERE LOCATED OVER EAST CENTRAL MINNESOTA AT 530 PM. THESE THUNDERSTORMS WERE LOCATED JUST WEST OF LE SUEUR AND NORTH OF THE TWIN CITIES FROM CAMBRIDGE TO WYOMING. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING HAIL...VERY HEAVY RAIN...FREQUENT DEADLY LIGHTNING AND STRONG WINDS. THESE THUNDERSTORMS SHOULD BE LOCATED IN THE WESTERN SUBURBS OF THE TWIN CITIES AND FROM PINE CITY MINNESOTA TO ST CROIX FALLS WISCONSIN BY 630PM. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULD TAKE SHELTER IF THREATENING WEATHER APPROACHES. THESE THUNDERSTORMS WERE PART OF A LARGER AREA OF SHOWERS AND THUNDERSTORMS THAT EXTENDED FROM HIBBING...THROUGH LAKE MILLE LACS...THE TWIN CITIES AND MANKATO...TO FAIRMONT. MOVEMENT WAS TO THE NORTHEAST AT 35 MILES AN HOUR. A FLASH FLOOD WATCH IS IN EFFECT UNTIL 4 AM THURSDAY MORNING FOR MUCH OF SOUTHWEST MINNESOTA. HEAVY RAINFALL AMOUNTS FROM 1 TO 3 INCHES HAVE BEEN OBSERVED IN A SHORT PERIOD OF TIME ACROSS SOUTH CENTRAL AND CENTRAL MINNESOTA. REMEMBER...FLASH FLOODING IS POSSIBLE IN RAVINES...GULLIES...AND ALONG SMALL STREAMS DUE TO THE RAPID RUNOFF OF THE HEAVY RAINS OVER GROUND ALREADY SATURATED WITH WATER. PERSONS CAMPING IN RAVINES OR VALLEYS WITH WITH SMALL STREAMS OR RIVERS RUNNING THROUGH THEM SHOULD BE ESPECIALLY CAREFUL OVERNIGHT AS WATER LEVELS CAN RISE WITH LITTLE OR NO ADVANCE WARNING. THEY SHOULD BE READY TO MOVE TO HIGHER GROUND. MBM
Special weather statement, Jun 23, 5:50 PM CDT, 2 hours 30 minutes before
WIZ003-006-MNZALL-232345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 550 PM CDT WED JUN 23 1993 ...STRONG THUNDERSTORMS ACROSS EAST CENTRAL MINNESOTA... STRONG THUNDERSTORMS WERE LOCATED OVER EAST CENTRAL MINNESOTA AT 530 PM. THESE THUNDERSTORMS WERE LOCATED JUST WEST OF LE SUEUR AND NORTH OF THE TWIN CITIES FROM CAMBRIDGE TO WYOMING. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING HAIL...VERY HEAVY RAIN...FREQUENT DEADLY LIGHTNING AND STRONG WINDS. THESE THUNDERSTORMS SHOULD BE LOCATED IN THE WESTERN SUBURBS OF THE TWIN CITIES AND FROM PINE CITY MINNESOTA TO ST CROIX FALLS WISCONSIN BY 630PM. PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULD TAKE SHELTER IF THREATENING WEATHER APPROACHES. THESE THUNDERSTORMS WERE PART OF A LARGER AREA OF SHOWERS AND THUNDERSTORMS THAT EXTENDED FROM HIBBING...THROUGH LAKE MILLE LACS...THE TWIN CITIES AND MANKATO...TO FAIRMONT. MOVEMENT WAS TO THE NORTHEAST AT 35 MILES AN HOUR. A FLASH FLOOD WATCH IS IN EFFECT UNTIL 4 AM THURSDAY MORNING FOR MUCH OF SOUTHWEST MINNESOTA. HEAVY RAINFALL AMOUNTS FROM 1 TO 3 INCHES HAVE BEEN OBSERVED IN A SHORT PERIOD OF TIME ACROSS SOUTH CENTRAL AND CENTRAL MINNESOTA. REMEMBER...FLASH FLOODING IS POSSIBLE IN RAVINES...GULLIES...AND ALONG SMALL STREAMS DUE TO THE RAPID RUNOFF OF THE HEAVY RAINS OVER GROUND ALREADY SATURATED WITH WATER. PERSONS CAMPING IN RAVINES OR VALLEYS WITH WITH SMALL STREAMS OR RIVERS RUNNING THROUGH THEM SHOULD BE ESPECIALLY CAREFUL OVERNIGHT AS WATER LEVELS CAN RISE WITH LITTLE OR NO ADVANCE WARNING. THEY SHOULD BE READY TO MOVE TO HIGHER GROUND. MBM
Special weather statement, Jun 23, 6:45 PM CDT, 1 hour 35 minutes before
WIZ003-006-MNZALL-240045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 645 PM CDT WED JUN 23 1993 ...STRONG THUNDERSTORMS CONTINUE IN EAST CENTRAL MINNESOTA... STRONG THUNDERSTORMS WERE LOCATED NORTH OF THE TWIN CITIES AROUND NORTH BRANCH AT 630 PM. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAINFALL...FREQUENT DEADLY LIGHTNING...HAIL AND STRONG GUSTY WINDS. THESE THUNDERSTORMS WERE MOVING TO THE NORTH AT 35 MILES AN HOUR AND WILL MOVE INTO GRANTSBURG WISCONSIN BY 730 PM. PERSONS ENGAGED IN OUTDOOR ACTIVITIES ARE ADVISED TO TAKE SHELTER IF THREATENING WEATHER APPROACHES. THESE THUNDERSTORMS WERE PART OF A LARGER AREA OF SHOWERS AND THUNDERSTORMS ACROSS NORTHEAST...CENTRAL AND SOUTH CENTRAL MINNESOTA. THEY EXTENDED FROM MOOSE LAKE...THROUGH THE TWIN CITIES AND WASECA...TO THE MINNESOTA/IOWA STATE LINE NEAR FAIRMONT. MOVEMENT WAS TO THE NORTH AT 35 MILES AN HOUR. A FLASH FLOOD WATCH IS IN EFFECT UNTIL 4 AM THURSDAY MORNING FOR MUCH OF SOUTHWEST MINNESOTA. HEAVY RAINFALL AMOUNTS FROM 1 TO 2 INCHES HAVE BEEN OBSERVED IN A VERY SHORT PERIOD OF TIME WITH SOME OF THESE THUNDERSTORMS. REMEMBER...FLASH FLOODING IS POSSIBLE IN RAVINES...GULLIES...AND ALONG SMALL STREAMS DUE TO THE RAPID RUNOFF OF THE HEAVY RAINS OVER GROUND ALREADY SATURATED WITH WATER. PERSONS CAMPING IN RAVINES OR VALLEYS WITH WITH SMALL STREAMS OR RIVERS RUNNING THROUGH THEM SHOULD BE ESPECIALLY CAREFUL OVERNIGHT AS WATER LEVELS CAN RISE WITH LITTLE OR NO ADVANCE WARNING. THEY SHOULD BE READY TO MOVE TO HIGHER GROUND. MBM
Special weather statement, Jun 23, 6:48 PM CDT, 1 hour 32 minutes before
WIZ003-006-MNZALL-240045- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS MN 645 PM CDT WED JUN 23 1993 ...STRONG THUNDERSTORMS CONTINUE IN EAST CENTRAL MINNESOTA... STRONG THUNDERSTORMS WERE LOCATED NORTH OF THE TWIN CITIES AROUND NORTH BRANCH AT 630 PM. THESE THUNDERSTORMS ARE CAPABLE OF PRODUCING VERY HEAVY RAINFALL...FREQUENT DEADLY LIGHTNING...HAIL AND STRONG GUSTY WINDS. THESE THUNDERSTORMS WERE MOVING TO THE NORTH AT 35 MILES AN HOUR AND WILL MOVE INTO GRANTSBURG WISCONSIN BY 730 PM. PERSONS ENGAGED IN OUTDOOR ACTIVITIES ARE ADVISED TO TAKE SHELTER IF THREATENING WEATHER APPROACHES. THESE THUNDERSTORMS WERE PART OF A LARGER AREA OF SHOWERS AND THUNDERSTORMS ACROSS NORTHEAST...CENTRAL AND SOUTH CENTRAL MINNESOTA. THEY EXTENDED FROM MOOSE LAKE...THROUGH THE TWIN CITIES AND WASECA...TO THE MINNESOTA/IOWA STATE LINE NEAR FAIRMONT. MOVEMENT WAS TO THE NORTH AT 35 MILES AN HOUR. A FLASH FLOOD WATCH IS IN EFFECT UNTIL 4 AM THURSDAY MORNING FOR MUCH OF SOUTHWEST MINNESOTA. HEAVY RAINFALL AMOUNTS FROM 1 TO 2 INCHES HAVE BEEN OBSERVED IN A VERY SHORT PERIOD OF TIME WITH SOME OF THESE THUNDERSTORMS. REMEMBER...FLASH FLOODING IS POSSIBLE IN RAVINES...GULLIES...AND ALONG SMALL STREAMS DUE TO THE RAPID RUNOFF OF THE HEAVY RAINS OVER GROUND ALREADY SATURATED WITH WATER. PERSONS CAMPING IN RAVINES OR VALLEYS WITH WITH SMALL STREAMS OR RIVERS RUNNING THROUGH THEM SHOULD BE ESPECIALLY CAREFUL OVERNIGHT AS WATER LEVELS CAN RISE WITH LITTLE OR NO ADVANCE WARNING. THEY SHOULD BE READY TO MOVE TO HIGHER GROUND. MBM
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 7:35 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Ramsey | 55 min |
| Jun 23, 7:35 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Hennepin | 40 min |
| Jun 23, 7:50 PM CDT | Flash Flood Warning | MPX | Martin | 70 min |
| Jun 23, 9:08 PM CDT | Flash Flood Warning | MPX | Chisago | 52 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1993Every severe thunderstorm warning in 1993
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.