Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 79, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 19, 2012, 7:51 PM CDT for Dakota County, Hennepin County, Scott County, Minnesota. It was in force for 38 min. 5 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 19, 2012, 7:51 PM CDT (00:51 UTC)
- Expired
- May 19, 2012, 8:29 PM CDT
- In force
- 38 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Dakota County, MN, Hennepin County, MN, Scott County, MN
The radar
The Minneapolis radar (KMPX), 25 km from the middle of the area, began a volume at 00:53 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 |
|---|---|---|---|
| May 19, 8:00 PM CDT | HAIL 1 | 2 W Eagan, MN | |
| May 19, 8:00 PM CDT | HAIL 1 | Apple Valley, MN | |
| May 19, 8:07 PM CDT | HAIL 1 | 1 N Burnsville, MN | |
| May 19, 8:07 PM CDT | HAIL 1 | Apple Valley, MN | |
| May 19, 8:12 PM CDT | HAIL 0.75 | Eagan, MN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.9 hours before the alert went out and 28 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
- 1062 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 2089 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 188 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.6
The text
As transmitted, in the capitals the NWS used until 2016.
237 WUUS53 KMPX 200051 SVRMPX MNC037-053-139-200145- /O.NEW.KMPX.SV.W.0079.120520T0051Z-120520T0145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 751 PM CDT SAT MAY 19 2012 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN DAKOTA COUNTY IN EAST CENTRAL MINNESOTA... SOUTHEASTERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA... NORTHEASTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA... * UNTIL 845 PM CDT * AT 748 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS STORM WAS LOCATED NEAR SAVAGE...OR ABOUT 14 MILES SOUTH OF MINNEAPOLIS...AND MOVING NORTHEAST AT 35 MPH. LOCATIONS IN THE WARNING INCLUDE... SAVAGE... BURNSVILLE... APPLE VALLEY... EAGAN... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4487 9324 4479 9309 4467 9333 4474 9341 TIME...MOT...LOC 0051Z 219DEG 30KT 4478 9332 WIND...HAIL 60MPH 1.25IN $$
2 follow-up statements
815 WWUS53 KMPX 200111 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 811 PM CDT SAT MAY 19 2012 MNC037-053-139-200145- /O.CON.KMPX.SV.W.0079.000000T0000Z-120520T0145Z/ DAKOTA MN-HENNEPIN MN-SCOTT MN- 811 PM CDT SAT MAY 19 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN SCOTT...SOUTHEASTERN HENNEPIN AND NORTHWESTERN DAKOTA COUNTIES UNTIL 845 PM CDT... AT 807 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS OF 60 MPH. THIS STORM WAS LOCATED NEAR TWIN CITIES AIRPORT... OR 6 MILES SOUTHEAST OF MINNEAPOLIS...MOVING NORTHEAST AT 35 MPH. IN ADDITION...AT 800 PM...QUARTER SIZE HAIL WAS REPORTED AT APPLE VALLEY. AT 807 PM...BURNSVILLE REPORTED QUARTER SIZE HAIL. LOCATIONS IMPACTED INCLUDE... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 4487 9324 4479 9309 4467 9333 4474 9341 TIME...MOT...LOC 0110Z 219DEG 30KT 4490 9318 WIND...HAIL 60MPH 1.00IN $$
891 WWUS53 KMPX 200129 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 829 PM CDT SAT MAY 19 2012 MNC037-053-139-200144- /O.CAN.KMPX.SV.W.0079.000000T0000Z-120520T0145Z/ DAKOTA MN-HENNEPIN MN-SCOTT MN- 829 PM CDT SAT MAY 19 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SCOTT... SOUTHEASTERN HENNEPIN AND NORTHWESTERN DAKOTA COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4487 9324 4479 9309 4467 9333 4474 9341 TIME...MOT...LOC 0129Z 219DEG 30KT 4502 9304 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 7:05 PM CDT | Severe Thunderstorm Warning | MPX | Chisago, Isanti | 55 min |
| May 19, 7:05 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Hennepin, Rice, Scott | 40 min |
| May 19, 7:31 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Dakota, Hennepin, Ramsey, Washington | 59 min |
| May 19, 8:06 PM CDT | Areal Flood Advisory | MPX | Dakota, Hennepin, Ramsey, Scott | 3 hr |
| May 19, 8:52 PM CDT | Special Weather Statement | MPX | Brown, Nicollet, Sibley, Watonwan | 38 min |
| May 20, 1:10 AM CDT | Special Weather Statement | MPX | Benton, Mille Lacs | 50 min |
| May 20, 1:43 AM CDT | Special Weather Statement | MPX | Anoka, Chisago, Isanti, Ramsey, Washington | 47 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.