1. On Feb 12, a minor THEMIS conjunction, TH-C at 18RE in the tail, observed the first indication of reconnection Earthward of it.
Substorm ~03:00-04:30UT
Precursors/onset 03:00-04:00. PBI at 04:05UT
TH-C saw tailward beams at 03:42UT
Reconnection reached lobe field lines
Poleward intensification at RANKin Inlet
Substorm ~10:00-12:00UT
Intensification at 10:50UT

2. Ground Mags

4. Substorm ~03:00-04:30UT

5. TH-C Bxyz, GSM coords ESA ion velocity, DSL coords
Note: Y= dawnward, Z = south
ESA ions density
ESA ions phi spec
Note: -90deg = dusk
SST ions energy spec
ESA ions energy spec
SST ions up phi spec
SST ions down phi spec
SST electrons phi spec
ESA electrons phi spec

6. TH-A
(key at back)

7. TH-D
(key at back)

8. TH-D
(key at back)

9. Substorm ~10:00-12:00UT

10. TH-C ESA ion velocity, DSL coords Note: Y= dawnward, Z = south
ESA ions density
ESA ions phi spec Note: -90 = dusk
SST ions energy spec
ESA ions energy spec
SST ions up phi spec
SST ions down phi spec
SST electrons phi spec
ESA electrons phi spec

11. TH-D
(key at back)

12. TH-D
(key at back)

13. Key