Alert archive / Alaska / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 1, NWS Fairbanks, AK
NWS Fairbanks, AK issued this severe thunderstorm warning at Jun 17, 2007, 5:37 PM AKDT. It took effect at Jun 17, 2007, 10:37 PM AKDT. It was in force for 20 days. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 17, 2007, 5:37 PM AKDT (01:37 UTC)
- In effect from
- Jun 17, 2007, 10:37 PM AKDT
- Expired
- Jul 7, 2007, 8:30 PM AKDT
- In force
- 20 days
- Issued by
- NWS Fairbanks, AK
- Area
- Counties, with a storm outline in the text
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Fairbanks, (PFAI), launched 00:00Z, 1.6 hours before the alert went out and 37 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
- 379 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 2008 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUAK59 PAFG 180646 SVRAFG AKZ222-180700- /X.NEW.PAFG.SV.W.0001.070618T0637Z-070618T0700Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FAIRBANKS AK 1037 PM ADT SUN JUN 17 2007 THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MIDDLE TANANA VALLEY AREA OF ALASKA... THIS INCLUDES THE CITIES OF...NORTH POLE...TWO RIVERS... * UNTIL 1120 PM ADT * AT 1032 PM ADT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DIME SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 50 MPH...HEAVY RAIN...AND FREQUENT LIGHTNING. THIS STORM WAS LOCATED NEAR THE CHENA LAKES FLOOD CONTROL PROJECT...OR ABOUT 3 MILES EAST OF NORTH POLE...AND MOVING NORTHWEST AT 25 MPH TOWARD THE CHENA HOT SPRINGS AND NORDALE ROAD INTERSECTION. THIS WILL IMPACT THE BADGER ROAD AND NORDALE ROAD AREAS, AND THE CHENA HOT SPRINGS ROAD AREA NEAR THE NORDALE ROAD INTERSECTION. PEOPLE ARE URDGE TO SEEK SHELTER IMMEDATELY IN STRONG BUILDING IN AN INTERIOR ROOM AWAY FROM WINDOWS. THE STORM SHOULD PASS BY 1130 PM. * THE SEVERE THUNDERSTORM WILL OTHERWISE IMPACT MAINLY RURAL AREAS OF THE INDICATED . LAT...LON 6471 14671 6495 14695 6488 14767 6468 14712 $$ BRADER
1 follow-up statement
000 WUAK59 PAFG 080404 SVRAFG AKZ220-224-080430- /X.NEW.PAFG.SV.W.0001.070708T0354Z-070708T0430Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE FAIRBANKS AK 754 PM ADT SAT JUL 7 2007 THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... UPPER TANANA VALLEY AND THE FORTYMILE COUNTRY AREA OF ALASKA... YUKON FLATS AND SURROUNDING UPLANDS AREA OF ALASKA... * UNTIL 830 PM ADT * AT 747 PM ADT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED TWO SEVERE THUNDERSTORMS WITH HAIL OVER ONE INCH IN DIAMETER. ONE STORM WAS LOCATED 10 MILES SOUTHWEST OF CENTRAL AND THE OTHER WAS LOCATED 25 MILES SOUTHWEST OF CENTRAL. THESE STORMS ARE MOVING NORTHWEST AT 20 MPH. * THE SEVERE THUNDERSTORMS ARE NOW MOVING OVER THE STEESE HIGHWAY BETWEEN EAGLE SUMMIT AND TWELVE MILE SUMMIT. FREQUENT LIGHTNING, HEAVY RAIN AND HAIL OF ONE TO TWO INCHES IN DIAMETER WILL OCCUR FOR THE NEXT HALF HOUR. MOTORISTS SHOULD REMAIN IN THEIR VEHICLE AND PEOPLE OUTDOORS SHOULD SEEK SHELTER. LAT...LON 6557 14453 6557 14609 6517 14586 6509 14536 $$ JB
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.
NWS Fairbanks, AK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 17, 9:37 AM AKDT, 8 hours earlier.
Area forecast discussion, Jun 17, 9:37 AM AKDT, 8 hours before
NORTHERN ALASKA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FAIRBANKS AK 237 PM ADT SUN JUN 17 2007 .DISCUSSION... ELONGATED UPPER HIGH CENTER OVER THE BEAUFORT SEA AND EASTERN INTERIOR WILL BE CENTERED OVER THE CENTRAL INTERIOR BY TUESDAY AFTERNOON. CONVECTION IS FIRING OVER MOST OF THE CENTRAL AND EASTERN INTERIOR EXCEPT FOR THE CENTRAL AND EAST PARTS OF ZONE 220 AND THE NORTHEAST PART OF ZONE 224...WHICH ARE UNDER THE HIGH CENTER. CONVECTION IS ALSO BEGINNING TO DEVELOP OVER THE BROOKS RANGE. THUNDERSTORMS ARE CURRENTLY OCCURRING IN SOUTHERN ZONE 224-ZONES 221-222-223-225-226. SOME STABILIZATION IS EXPECTED OVER THE EASTERN AND NORTHEASTERN INTERIOR MONDAY AS THE UPPER HIGH BECOMES MORE ORGANIZED OVER THE NORTHEAST INTERIOR. THE MORE STABLE AIR WILL EXPAND FARTHER TO THE WEST TUESDAY AS THE HIGH CENTER MOVES TO THE CENTRAL INTERIOR. CONVECTION MONDAY WILL BE MAINLY OVER THE CENTRAL INTERIOR AND BROOKS RANGE. CONVECTION TUESDAY IS EXPECTED TO BE LIMITED TO A NARROW STRIP OVER THE CENTRAL INTERIOR AND ALSO ALONG THE BROOKS RANGE CREST. GOES VIS LOOP IS SHOWING THAT A STRIP OF STRATUS OVER MARINES ARE 240 AND 245 IS HAS EVAPORATED SOME UNDER DAYTIME SOLAR HEATING...BUT SOME STILL REMAINS AND IT CAN BE SEEN BETTER ON THE FOG PRODUCT LOOP. THIS AREA OF STRATUS IS CREEPING SLOWLY WESTWARD. A MUCH LARGER BLOB OF STRATUS LIES FARTHER TO THE NORTH IN THE BEAUFORT SEA...EAST OF 150W. THIS STRATUS IS DRIFTING SLOWLY WESTWARD. BARROW AND DEADHORSE AREAS WILL LIKELY REMAIN CLEAR TODAY...BUT MAY SEE SOME STRATUS TONIGHT. ZONES 201 AND 202 MAY EXPERIENCE ISOLATED SHOWERS THIS EVENING AS LEFTOVERS FROM CONVECTION IN THE BROOKS RANGE MOVE NORTHWARD... STEERED BY SOUTHERLY FLOW ALOFT. A LIGHTING STRIKE WAS DETECTED IN ZONE 201 YESTERDAY EVENING. COOLER AND MORE UNSETTLED WEATHER IS POSSIBLE ALONG THE ARCTIC COAST BEGINNING THURSDAY AS AN UNSEASONABLY DEEP AND COLD UPPER LOW MOVES ACROSS THE BEAUFORT SEA. TIMING AND TRACK OF THIS UPPER LOW IS STILL UNCERTAIN...WITH THE ECMWF OPTING FOR A TRACK FARTHER TO THE NORTH THAN THE GFS AND GFS ENSEMBLE MEAN. THE ECMWF SOLUTION WOULD SUGGESTED ONLY MINIMUM EFFECT ON THE ARCTIC COAST WITH THE OUTER FRINGE OF THE CIRCULATION JUST BARELY MAKING IT TO THE ARCTIC COAST. MID RANGE UPPER PROGS FOR THE INTERIOR ALSO DIFFER...GFS AND GFS ENSEMBLE MEAN INDICATING A LIGHT BUT MAINLY CYCLONIC WEST TO SOUTHWEST FLOW ALOFT AROUND THE BEAUFORT SEA LOW. ECMF CONTINUES RIDGING...BUT WITH W WORM-IN-THE-APPLE DEEPENING OVER THE SOUTHERN WEST COAST THURSDAY...MOVING TO THE SOUTHWEST INTERIOR FRIDAY. IN GENERAL...CONFIDENCE IN THE MID RANGE FORECASTS IS LOW DUE TO THE DIFFERING MODEL SOLUTIONS. COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE && .FIRE WEATHER... NONE && .HYDROLOGY... NONE && .AFG WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT ADVISORY FOR PKZ245. && RF JUN 07
In the hours before
Local storm report, Jun 17, 11:52 AM AKDT, 5 hours 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FAIRBANKS AK
452 PM ADT SUN JUN 17 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0449 PM HAIL 5 NE FAIRBANKS 64.87N 147.74W
06/17/2007 U0.25 INCH AK CO-OP OBSERVER
3/16 OF AN INCH FELL.
0449 PM HAIL 5 NE FAIRBANKS 64.87N 147.74W
06/17/2007 E0.25 INCH AK CO-OP OBSERVER
COOP OBSERVER REPORTED 3/16 OF AN INCH HAIL.
&&
PWEIMERLocal storm report, Jun 17, 12:06 PM AKDT, 5 hours 31 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE FAIRBANKS AK
506 PM ADT SUN JUN 17 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0449 PM HAIL 5 NE FAIRBANKS 64.87N 147.74W
06/17/2007 U0.25 INCH AK CO-OP OBSERVER
3/16 OF AN INCH FELL.
0449 PM HAIL 5 NE FAIRBANKS 64.87N 147.74W
06/17/2007 E0.25 INCH AK CO-OP OBSERVER
COOP OBSERVER REPORTED 3/16 OF AN INCH HAIL.
0501 PM HEAVY RAIN 5 S FAIRBANKS 64.74N 147.86W
06/17/2007 M0.00 INCH AK CO-OP OBSERVER
.30 IN 10 MIN
0501 PM HEAVY RAIN 5 SE FAIRBANKS 64.76N 147.74W
06/17/2007 E0.00 INCH AK CO-OP OBSERVER
.37 RAIN IN 10 MIN
0501 PM HAIL 4 SE FAIRBANKS 64.77N 147.76W
06/17/2007 M0.25 INCH AK CO-OP OBSERVER
1/10 OF AN INCH HAIL.
&&
PWEIMERLocal storm report, Jun 17, 12:08 PM AKDT, 5 hours 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FAIRBANKS AK
508 PM ADT SUN JUN 17 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0501 PM LIGHTNING 4 S FAIRBANKS 64.76N 147.86W
06/17/2007 AK OFFICIAL NWS OBS
STRIKE 2 MILES FROM IARC BUILDING.
&&
PWEIMERLocal storm report, Jun 17, 12:16 PM AKDT, 5 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FAIRBANKS AK
516 PM ADT SUN JUN 17 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0510 PM HEAVY RAIN 4 SE FAIRBANKS 64.77N 147.76W
06/17/2007 M0.45 INCH AK NWS EMPLOYEE
STORM TOTAL IN 20 MINUTES
&&
PWEIMERThe office that day
Everything else NWS Fairbanks, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 5:48 PM AKDT | Severe Thunderstorm Warning | AFG | 20 days | |
| Jun 18, 9:48 AM AKDT | Red Flag Warning | AFG | 3 days |
Nearby
Severe Thunderstorm Warnings in Alaska, 2007Every severe thunderstorm warning in 2007
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.