Alert archive / Minnesota / Flash Flood Warnings in 1993
Flash Flood Warning 22, NWS Twin Cities, MN
NWS Twin Cities, MN issued this flash flood warning at Aug 15, 1993, 2:03 AM CDT for Freeborn County, Minnesota. It was in force for 117 min.
The area
The counties it named.
The facts
- Issued
- Aug 15, 1993, 2:03 AM CDT (07:03 UTC)
- Expired
- Aug 15, 1993, 4:00 AM CDT
- In force
- 117 min
- Issued by
- NWS Twin Cities, MN
- Area
- Whole counties
County Freeborn County, MN
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 7.1 hours before the alert went out and 132 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
- 1145 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 758 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 223 m²/s²
- 0-3 km storm-relative helicity
- 288 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KRST 150704 FFWRST MNC047-150900- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ROCHESTER MN 203 AM CDT SUN AUG 15 1993 THE NATIONAL WEATHER SERVICE IN ROCHESTER MN HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 400 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL MINNESOTA ...FREEBORN COUNTY AT 200AM CDT...THERE HAVE BEEN WIDESPREAD REPORTS OF FLOODING ACROSS A LARGE PORTION OF FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA. SOME UNOFFICIAL RAINFALL REPORTS SINCE 11PM ON SATURDAY INDICATED THAT OVER 6 INCHES OF RAIN HAD FALLEN IN THE TOWN OF GLENVILLE...AND ANYWHERE FROM 4 TO 5 INCHES OVER ALBERT LEA. ACCORDING TO LAW ENFORCEMENT OFFICIALS...THE CITY OF ALBERT LEA WAS EXPERIENCING STREET FLOODING ACROSS MUCH OF THE CITY...AS WELL AS QUITE BIT OF BASEMENT FLOODING. THERE WAS ALSO A REPORT OF A BRIDGE BEING COVERED BY WATER ON COUNTY ROAD 26...ABOUT 2 MILES SOUTHEAST OF GLENVILL THE HEAVIEST OF THE RAIN SHOULD MOVE OUT OF ALBERT LEA AREA BY 300AM ...HOWEVER IT WILL TAKE QUITE SOME TIME BEFORE THE STREET FLOODING CEASES. THERE WILL THEN BE A RESPITE IN THE RAIN ACTIVITY BEFORE THE NEXT BATCH OF RAIN OVER EASTERN SOUTH DAKOTA MOVES IN LATER THIS MORNING. FLOOD WATERS ARE EXTREMELY DANGEROUS. DRIVING THROUGH HIGH WATER IS THE WORST THING YOU CAN DO. TWO FEET OF MOVING WATER IS ENOUGH TO CARRY AWAY MOST CARS. IF YOUR CAR BECOMES STALLED IN HIGH WATER...ABANDON IT IMMEDIATELY. &
What forecasters said that day
The local office's own words before this flash flood 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, Aug 14, 9:32 PM CDT, 4 hours 31 minutes before
MNZALL-150600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 930 PM CDT SAT AUG 15 1993 ...TORNADO WATCH UNTIL 11 PM FOR PART OF SOUTHWEST MINNESOTA AND HEAVY RAIN IS POSSIBLE ELSEWHERE... A FEW SEVERE STORMS ARE STILL POSSIBLE UNTIL 11 PM IN THE SOUTHWEST... AS LOW PRESSURE AND A WARM FRONT CONTINUED TO LURK JUST TO THE SOUTH AND SOUTHWEST OF MINNESOTA. THE ATMOSPHERE IS CHARGED WITH MOISTURE... AND READY TO BECOME SEVERE AT A MOMENTS NOTICE. SO IF STORMS DEVELOP IN SOUTHWEST MINNESOTA...BE READY TO GET TO SHELTER QUICKLY. ANOTHER SERIOUS MATTER IS POSSIBLE FLOODING. ALL THE HUMIDITY WILL MAKE FOR SOME HEAVY RAINFALL. A FEW LOCALES MAY VERY WELL PICK UP 3 OR 4 INCHES IN A COUPLE OF HOURS. BUT SUCH HEAVY RAIN SHOULD BE ON THE ISOLATED SIDE. MOST AREAS WHICH SEE STORMS SHOULD INSTEAD RECEIVE ONE OR TWO INCHES. IF YOU GET CAUGHT IN A SUDDEN DOWNBURST...BE AWARE OF POSSIBLE FLOODING. REMEMBER NOT TO CROSS ANY ROAD WITH WATER FLOWING ACROSS. IT IS VERY DIFFICULT TO JUDGE THE DEPTH OF WATER DURING NIGHT...WHEN MOST FLOODING DEATHS OCCUR. KRAUSE
Special weather statement, Aug 14, 11:46 PM CDT, 2 hours 17 minutes before
MNZALL-150600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1140 PM CDT SAT AUG 15 1993 ...SEVERE THUNDERSTORM WATCH UNTIL 4AM SUNDAY MORNING FOR PORTIONS OF WEST CENTRAL AND SOUTHWEST MINNESOTA... AT 1130 PM STRONG THUNDERSTORMS HAD DEVELOPED RAPIDLY ACROSS SOUTHWEST INTO SOUTH CENTRAL MINNESOTA. THE STORMS EXTENDED FROM NEAR MARSHALL AND REDWOOD FALLS SOUTHEAST THROUGH NEW ULM TO JUST SOUTH OF MANKATO TO NEAR ALBERT LEA. THE BAND OF STORMS WAS MOVING EAST NORTHEAST AT 25 MILES AN HOUR. NO SEVERE WEATHER HAS BEEN REPORTED WITH THE STORMS BUT SOME FLOODING IS POSSIBLE AS THE STORMS CONTINUE TO DEVELOP AND TAP THE ABUNDANT MOISTURE AVAILABLE IN THE AIR. SOME AREAS OF SOUTHERN MINNESOTA MAY SEE RAINFALL AMOUNT IN EXCESS OF 3 INCHES DURING THE NIGHT. REMEMBER NOT TO CROSS FLOODED ROADWAYS AT NIGHT BECAUSE ITS DIFFICULT TO JUDGE THE DEPTH OF WATER DURING NIGHT...WHEN MOST FLOODING DEATHS OCCUR. PERS4ONS IN SOUTHWEST AND SOUTH CENTRAL MINNESOTA SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND BE PREPARED TO SEEK SAFE SHELTER. SES
Special weather statement, Aug 15, 12:25 AM CDT, 1 hour 38 minutes before
MNZ016-151000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1225 AM CDT SUN AUG 15 1993 ...A LINE OF THUNDERSTORMS APPROACHING THE TWIN CITIES... AT 1225 AM...A LINE OF THUNDERSTORMS WAS LOCATED 45 MILES SOUTHWEST FROM THE TWIN CITIES METROPOLITAN AREA MOVING INTO SIBLEY AND LE SUEUR COUNTIES. THIS LINE OF THUNDERSTORMS WAS MOVING EAST NORTHEAST AT 25 MILES AN HOUR AND WILL MOVE INTO SCOTT AND DAKOTA COUNTIES BY 1:15 AM. IF THE THUNDERSTORMS CONTINUE ON THE PRESENT COURSE THEY WILL REACH THE DOWNTOWN AREAS OF MINNEAPOLIS AND ST PAUL BETWEEN 2:00 AM AND 2:30 AM. THE MOST DANGEROUS ASPECTS OF THESE THUNDERSTORM WILL BE FREQUENT LIGHTNING AND PERIODS OF HEAVY RAINFALL. SOME GUSTY WINDS ARE ALSO LIKELY. DOWNPOURS MAY CAUSE FLOODING OF URBAN AND LOW LYING AREAS SUCH AS UNDERPASSES AND DITCHES. DO NOT ATTEMPT TO DRIVE ACROSS ROADWAYS THAT MAY BECOME COVERED BY RAPID RUNOFF.
Special weather statement, Aug 15, 12:30 AM CDT, 1 hour 33 minutes before
MNZ016-151000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 1225 AM CDT SUN AUG 15 1993 ...A LINE OF THUNDERSTORMS APPROACHING THE TWIN CITIES... AT 1225 AM...A LINE OF THUNDERSTORMS WAS LOCATED 45 MILES SOUTHWEST FROM THE TWIN CITIES METROPOLITAN AREA MOVING INTO SIBLEY AND LE SUEUR COUNTIES. THIS LINE OF THUNDERSTORMS WAS MOVING EAST NORTHEAST AT 25 MILES AN HOUR AND WILL MOVE INTO SCOTT AND DAKOTA COUNTIES BY 1:15 AM. IF THE THUNDERSTORMS CONTINUE ON THE PRESENT COURSE THEY WILL REACH THE DOWNTOWN AREAS OF MINNEAPOLIS AND ST PAUL BETWEEN 2:00 AM AND 2:30 AM. THE MOST DANGEROUS ASPECTS OF THESE THUNDERSTORM WILL BE FREQUENT LIGHTNING AND PERIODS OF HEAV|Y RAINFALL. SOME GUSTY WINDS ARE ALSO LIKELY. DOWNPOURS MAY CAUSE FLOODING OF URBAN AND LOW LYING AREAS SUCH AS UNDERPASSES AND DITCHES. DO NOT ATTEMPT TO DRIVE ACROSS ROADWAYS THAT MAY BECOME COVERED BY RAPID RUNOFF.
Special weather statement, Aug 15, 1:25 AM CDT, 38 minutes before
MNZ016-151100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 125 AM CDT SUN AUG 15 1993 ...STRONG THUNDERSTORMS APPROACHING THE TWIN CITIES... AT 125 AM...AN AREA OF STRONG THUNDERSTORMS CONTINUED TO APPROACH THE TWIN CITIES FROM THE WEST AND SOUTHWEST. THE THUNDERSTORMS EXTENDED FROM THE TWIN CITIES SOUTH TO NEAR OWATONNA AND TO THE SOUTHWEST TO AROUND NEW ULM. THESE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT ABOUT 25 MILES AN HOUR. THUNDERSTORMS ARE NOW AFFECTING PARTS OF HENNIPEN..SCOTT..SIBLEY AND WRIGHT COUNTIES. WITH THE PRESENT DIRECTION AND SPEED OF MOVEMENT ALL OF THE TWIN CITIES METROPOLITAN AREA SHOULD BE EXPERIENCING THUNDESTORMS BY 230 AM. THESE THUNDERATORMS WERE PRODUCING NEARLY CONTINUOUS AND VIDID LIGHTNING. REPORTS HAVE BEEN TRICKLING INTO THE NATIONAL WEATHER SERVICE OF RAINFALL TOTALS IN EXCESS OF 4 INCHES IN 2 HOURS OVER PARTS OF WESTERN MINNESOTA. THESE TORRENTIAL RAINS CAN BE EXTREMELY DANGEROUS. DO NOT ATTEMPT TO DRIVE ACROSS ROADWAYS THAT ARE UNDER WATER NOR ATTEMPT TO DRIVE THROUGH UNDERPASSES WITH STANDING WATER. LRS
Special weather statement, Aug 15, 1:30 AM CDT, 33 minutes before
MNZ016-151100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MINNEAPOLIS/ST PAUL MN 125 AM CDT SUN AUG 15 1993 ...STRONG THUNDERSTORMS APPROACHING THE TWIN CITIES... AT 125 AM...AN AREA OF STRONG THUNDERSTORMS CONTINUED TO APPROACH THE TWIN CITIES FROM THE WEST AND SOUTHWEST. THE THUNDERSTORMS EXTENDED FROM THE TWIN CITIES SOUTH TO NEAR OWATONNA AND TO THE SOUTHWEST TO AROUND NEW ULM. THESE THUNDERSTORMS WERE MOVING EAST NORTHEAST AT ABOUT 25 MILES AN HOUR. THUNDERSTORMS ARE NOW AFFECTING PARTS OF HENNIPEN..SCOTT..SIBLEY AND WRIGHT COUNTIES. WITH THE PRESENT DIRECTION AND SPEED OF MOVEMENT ALL OF THE TWIN CITIES METROPOLITAN AREA SHOULD BE EXPERIENCING THUNDESTORMS BY 230 AM. THESE THUNDERATORMS WERE PRODUCING NEARLY CONTINUOUS AND VIDID LIGHTNING. REPORTS HAVE BEEN TRICKLING INTO THE NATIONAL WEATHER SERVICE OF RAINFALL TOTALS IN EXCESS OF 4 INCHES IN 2 HOURS OVER PARTS OF WESTERN MINNESOTA. THESE TORRENTIAL RAINS CAN BE EXTREMELY DANGEROUS. DO NOT ATTEMPT TO DRIVE ACROSS ROADWAYS THAT ARE UNDER WATER NOR ATTEMPT TO DRIVE THROUGH UNDERPASSES WITH STANDING WATER. LRS
Nearby
Flash Flood Warnings in Minnesota, 1993Every flash flood 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.