Alert archive / Iowa / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 2, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Mar 19, 2012, 5:50 PM CDT for 4 counties in Iowa. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Mar 19, 2012, 5:50 PM CDT (22:50 UTC)
- Expired
- Mar 19, 2012, 6:15 PM CDT
- In force
- 25 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cerro Gordo County, IA, Hancock County, IA, Winnebago County, IA, Worth County, IA
The radar
The Minneapolis radar (KMPX), 170 km from the middle of the area, began a volume at 22:50 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 12:00Z, 10.8 hours before the alert went out and 170 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
- 344 J/kg
- Mixed-layer CIN
- -272 J/kg
- Mixed-layer LCL
- 709 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
112 WUUS53 KDMX 192250 SVRDMX IAC033-081-189-195-192315- /O.NEW.KDMX.SV.W.0002.120319T2250Z-120319T2315Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 550 PM CDT MON MAR 19 2012 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN CERRO GORDO COUNTY IN NORTH CENTRAL IOWA... NORTHEASTERN HANCOCK COUNTY IN NORTH CENTRAL IOWA... EASTERN WINNEBAGO COUNTY IN NORTH CENTRAL IOWA... WORTH COUNTY IN NORTH CENTRAL IOWA... * UNTIL 615 PM CDT * AT 548 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 9 MILES SOUTHEAST OF LAKE MILLS TO NORA SPRINGS...AND MOVING NORTH AT 50 MPH. AT 543 PM A 63 MPH WIND GUSTS WAS REPORTED AT THE MASON CITY AIRPORT WITH THESE STORMS. * LOCATIONS IMPACTED INCLUDE... MANLY...LAKE MILLS...NORTHWOOD...JOICE...ROCK FALLS...PLYMOUTH... KENSETT AND GRAFTON. THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 193 AND 218. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE FOR DAMAGING WINDS...FALLING TREES AND FLYING DEBRIS. MOVE INDOORS AND STAY AWAY FROM WINDOWS. IF YOU ARE IN A MOBILE HOME... SEEK SHELTER IN A REINFORCED BUILDING. && LAT...LON 4350 9301 4296 9302 4323 9360 4351 9353 TIME...MOT...LOC 2249Z 188DEG 42KT 4332 9341 4313 9304 WIND...HAIL 60MPH <.75IN $$ AWB
2 follow-up statements
385 WWUS53 KDMX 192307 SVSDMX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 607 PM CDT MON MAR 19 2012 IAC033-081-189-192316- /O.CAN.KDMX.SV.W.0002.000000T0000Z-120319T2315Z/ HANCOCK IA-CERRO GORDO IA-WINNEBAGO IA- 607 PM CDT MON MAR 19 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EASTERN WINNEBAGO...NORTHERN CERRO GORDO AND NORTHEASTERN HANCOCK COUNTIES IS CANCELLED... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4350 9301 4325 9301 4326 9350 4351 9350 TIME...MOT...LOC 2306Z 188DEG 42KT 4352 9337 4333 9300 $$ IAC195-192315- /O.CON.KDMX.SV.W.0002.000000T0000Z-120319T2315Z/ WORTH IA- 607 PM CDT MON MAR 19 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WORTH COUNTY UNTIL 615 PM CDT... AT 605 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 9 MILES NORTHWEST OF NORTHWOOD TO 6 MILES SOUTHWEST OF ST. ANSGAR...MOVING NORTH AT 50 MPH. IN ADDITION...AT 543 PM A 63 MPH WIND GUST WAS REPORTED AT THE MASON CITY AIRPORT WITH THESE STORMS. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF NORTHEASTERN WORTH COUNTY. THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 203 AND 218. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE FOR DAMAGING WINDS...FALLING TREES AND FLYING DEBRIS. MOVE INDOORS AND STAY AWAY FROM WINDOWS. IF YOU ARE IN A MOBILE HOME...GET OUT NOW...AND SEEK SHELTER IN A REINFORCED BUILDING. && LAT...LON 4350 9301 4325 9301 4326 9350 4351 9350 TIME...MOT...LOC 2306Z 188DEG 42KT 4352 9337 4333 9300 WIND...HAIL 60MPH <.75IN $$ AWB
476 WWUS53 KDMX 192314 SVSDMX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 614 PM CDT MON MAR 19 2012 IAC195-192325- /O.EXP.KDMX.SV.W.0002.000000T0000Z-120319T2315Z/ WORTH IA- 614 PM CDT MON MAR 19 2012 ...THE SEVERE THUNDERSTORM WARNING FOR WORTH COUNTY HAS EXPIRED... THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA. LAT...LON 4350 9301 4325 9301 4326 9350 4351 9350 TIME...MOT...LOC 2315Z 188DEG 42KT 4362 9335 4343 9298 $$ AWB
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 19, 3:48 PM CDT | Severe Thunderstorm Warning | DMX | Clarke, Decatur, Ringgold, Union | 42 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.